JP7514342B2 - - Stabilizing element for shoe upper - Google Patents

Description

The present invention relates to a shoe comprising a shoe upper, an outsole and a stabilizing element. Furthermore, the present invention relates to at least one containment element within the shoe upper, a respective shoe upper and a method for manufacturing a shoe comprising said shoe upper.

When designing shoes, a compromise is often made between comfort, functionality, and safety. For example, a soccer shoe may offer excellent comfort due to its significant cushioning. However, the same soccer shoe may have deficiencies in terms of functionality, e.g., limited feel for the ball, and deficiencies in terms of safety, e.g., insufficient ankle stabilization, due to its significant cushioning.

Nevertheless, the fundamental objective is to improve the comfort as well as the functionality and safety of shoes. Especially for sports and outdoor activities, it is essential to ensure that shoes are comfortable to wear, have a low risk of injury and fulfil the functions for which they are intended. In this direction, the present invention aims to solve the first and second problems.

The first problem addressed by the present invention is the design of a stabilizing element for ankle stabilization. Various types of shoes require ankle stabilization to prevent ankle injuries and/or to avoid ligament injuries. For example, when a soccer player shoots while standing on a soft and/or uneven surface, there is a high risk of spraining the ankle, which may lead to injury. Therefore, stabilizing elements may be applied to shoes, especially soccer shoes. However, stabilizing elements known in the prior art have several drawbacks. Existing stabilizing elements do not provide sufficient stabilization and/or are so comfortable that they affect the health of the leg.

A first group of existing stabilizing elements surrounds the heel area and extends from the outsole of the shoe towards the medial and lateral ankle areas and towards the Achilles area. Thereby, such stabilizing elements extend from the lateral side of the shoe towards the medial side of the shoe and at least partially surround the Achilles area, in particular the Achilles tendon insertion.

These stabilizing elements, as they are formed around the heel area, provide the wearer with good ankle stability, since they hold the heel part tight. However, they exert pressure on the Achilles area, in particular on the Achilles tendon insertion, which is uncomfortable for the wearer, especially when running. Furthermore, said pressure on the Achilles area, in particular on the Achilles tendon insertion, can lead to irritation or even inflammation of the Achilles tendon.

The second group of existing stabilizing elements extend from the outsole of the shoe toward the medial or lateral ankle area, such that they do not extend from the lateral side of the shoe to the medial side of the shoe and therefore do not encircle the Achilles area. Instead, a first stabilizing element is provided on the lateral side of the shoe and a second stabilizing element is provided on the medial side of the shoe.

Such a stabilizing element may therefore avoid pressure in the Achilles area, in particular at the Achilles tendon attachment. Improved comfort may therefore be provided. Furthermore, irritation or even inflammation of the Achilles tendon may be avoided. However, existing stabilizing elements of the second group do not hold the heel area tightly and therefore provide less stability to the wearer.

The first objective underlying the present invention is therefore to provide a shoe with stabilizing elements that maximize stability while minimizing pressure on the Achilles region, particularly the Achilles tendon insertion.

The second problem addressed by the present invention refers to the need to keep the wearer's foot fixed inside the shoe, preferably in a comfortable manner.

Generally, laces are known to secure the wearer's foot in the shoe. Furthermore, the use of stretchable elements and hook-and-loop fasteners is common to secure the wearer's foot in the shoe. However, in some cases, further means to secure the leg in the shoe are additionally desirable. For example, when a particularly good hold inside the shoe is required. Furthermore, in some cases, it may be necessary for the shoe to be free of laces. One reason for this may be to provide a soccer shoe that allows a particularly good feel for the ball in the top midfoot area. Another reason is that tight laces are often felt to be uncomfortable.

The second objective underlying the present invention is therefore to provide a means for improving the fixation of the wearer's foot within the shoe.

The first object underlying the present invention is at least partially achieved by the teachings of the independent claims, in particular by the first aspect of the present invention. Furthermore, the first object underlying the present invention is at least partially achieved by the second aspect of the present invention. Furthermore, the first object underlying the present invention is at least partially achieved by the third aspect of the present invention. Furthermore, the second object underlying the present invention is at least partially achieved by the fourth aspect of the present invention.

A first aspect of the invention according to a first alternative embodiment relates to a shoe comprising a shoe upper, an outsole and a stabilizing element. The stabilizing element extends from the outsole upwardly towards an entry opening of the shoe upper and rearwardly towards a heel region of the shoe. Optionally, the stabilizing element extends rearwardly into the heel region of the shoe. Furthermore, the stabilizing element comprises an outer layer. Furthermore, the stabilizing element extends along the exterior of the shoe upper, such that a portion of the exterior of the shoe upper is not covered by the stabilizing element, the portion being located between the stabilizing element and the outsole. The portion transitions continuously into a further portion of the exterior of the shoe upper that is not covered by the stabilizing element, whereby the further portion extends into a portion of the shoe upper that is configured to receive an Achilles region and/or an Achilles tendon attachment. Furthermore, the outer layer of the stabilizing element is integrally molded with the outsole of the shoe.

In this regard, "integrally molded" may refer to an aspect in which no material boundary can be discerned between the outer layer and the outsole. In particular, the outer layer and the outsole may be integrally formed by injection molding, direct casting, and/or foaming. Furthermore, the outer layer and the outsole may comprise a polymeric material. In particular, the outer layer and the outsole may comprise polyamide, polyurethane, and/or rubber. By integrally molding the outer layer with the outsole, the outer layer may be given a higher pre-tensioning force relative to the inner layer. Thus, a higher pressure may be applied to the heel area of the wearer. Furthermore, the number of required work steps may be reduced.

The portion of the exterior of the shoe upper that is not covered by the stabilizing element and is located between the stabilizing element and the outsole may be at least partially bounded by an axis extending substantially perpendicularly from the outsole to the stabilizing element. More specifically, said axis may extend substantially perpendicularly from the plane of the flaring of the shoe outsole to the most posterior point of the stabilizing element. The portion that is not covered by the stabilizing element at least partially avoids the application of uncomfortable pressure to the Achilles area. In particular, said portion may avoid the stabilizing element exerting pressure on the attachment of the Achilles tendon. Thus, the comfort of the shoe may be improved and/or irritation of the Achilles tendon may be avoided. It is understood that further portions of the shoe upper other than the portion of the exterior of the shoe upper that is located between the stabilizing element and the outsole may also not be covered by the stabilizing element.

The above-mentioned further portion additionally avoids the application of uncomfortable pressure to the Achilles area. In particular, the further portion may avoid the stabilizing element exerting pressure on the attachment of the Achilles tendon. Furthermore, the flexibility of the shoe upper may not be hindered by the stabilizing element in the Achilles area and/or at the attachment of the Achilles tendon. Thus, the comfort of the shoe may be improved and/or irritation of the Achilles tendon may be avoided. The further portion preferably extends from the lateral side of the shoe to the medial side of the shoe. Thereby, the above-mentioned advantages may be further accentuated.

It will further be understood that the outer layer of the stabilizing element may be directly attached to the exterior of the shoe upper. By way of example, the outer layer of the stabilizing element may be attached to the exterior of the shoe upper by sewing, heat welding, and/or gluing. However, the outer layer of the stabilizing element may be in contact with the exterior of the shoe upper without being additionally attached to the exterior of the shoe upper. It will further be understood that the outer layer described above may be more generally referred to as a "layer". Nevertheless, the term "outer layer" is an aid in understanding in view of further features according to the present invention described below.

Furthermore, the stabilizing element of the shoe according to the first alternative of the first aspect of the present invention may comprise an inner layer. It is understood that the inner layer may be disposed between the outer layer and the exterior of the shoe upper. With the inner layer, further support may be provided and a separation of functions within the stabilizing element may be achieved. By way of example, the inner layer may provide support to the wearer's foot, while the outer layer serves to fasten the inner layer towards the wearer's foot. Thereby, the amount of material required for the stabilizing element may be reduced, since the inner and outer layers are optimized with respect to the specific functions that each performs.

Furthermore, the rear side edge of the lower part of the stabilizing element may extend upward from the outsole toward the foot opening of the shoe upper and backward toward the heel region of the shoe, with the angle between the rear side edge of the lower part of the stabilizing element and the plane of the outsole's flaring being preferably 10° to 90°, more preferably 15° to 60°, even more preferably 20° to 50°, and most preferably 30° to 40°. The rear side edge of the lower part may at least partially limit the stabilizing element in the rear direction. Furthermore, the stabilizing element may be at least partially limited in the rear direction by the rearmost edge of the upper part of the stabilizing element, which may be offset from the rearmost line of the upper extending upward from the outsole toward the foot opening. The rearmost edge of the upper part may be located in the upward direction from the rear side edge of the lower part. The stabilizing element may be completely limited in the rear direction by the rearmost edge of the upper part and/or the rear side edge of the lower part. From the above, it will be understood that the above-mentioned portions of the exterior of the shoe upper that are not covered by the stabilizing element and are located between the stabilizing element and the outsole may alternatively be described.

Furthermore, the first aspect of the invention according to the second alternative embodiment refers to a shoe comprising a shoe upper, an outsole, and a stabilizing element. The stabilizing element extends upwardly from the outsole towards an entry opening in the shoe upper and rearwardly towards a heel region of the shoe. Optionally, the stabilizing element extends rearwardly into the heel region of the shoe. Furthermore, the stabilizing element comprises an inner layer and an outer layer. Furthermore, the inner layer and the outer layer are of different materials. The stabilizing element extends along the exterior of the shoe upper.

The different materials allow the functions to be separated. The inner layer may be made of a material with higher stiffness and/or strength than the outer layer. By way of example, the inner layer may comprise a fiber-reinforced polymer. Furthermore, the outer layer may be made of a material with higher elasticity or higher stiffness than the inner layer. By way of example, the outer layer may comprise a polyamide material. Thus, the inner layer may provide support, whereas the outer layer may fasten the inner layer to the shoe upper. Thus, the stabilizing element may be fastened to the heel and/or ankle of the wearer. Thereby, stability may be improved. Furthermore, the weight of the stabilizing element may be reduced by the clear use of materials. By way of example, the inner layer comprising a fiber-reinforced polymer may have a reduced thickness due to its higher tensile strength. Furthermore, the inner layer may be adapted to the characteristics of the wearer's foot, whereas the outer layer may remain unchanged. Thus, the separation of functions within the stabilizing element by using different materials may reduce the effort of modification. The inner layer and/or the outer layer may comprise polymers such as polyamide, polyurethane and/or rubber. In particular, the inner layer and/or the outer layer may include ethylene vinyl acetate (EVA), polyamide 11 (PA11) and/or polyamide 12 (PA12). Additionally, the inner layer and/or the outer layer may include a thermoplastic elastomer (TPE), such as polyether block amide (PEBA) and/or thermoplastic polyurethane (TPU). Additionally, the inner layer and/or the outer layer may include a synthetic material, a natural material, and/or a metal.

The inner and outer layers of the shoe according to the first alternative may be made of different materials. In this regard, the configurations and/or advantages of the previous paragraph may be considered.

The shoe according to the second alternative may be provided in that a portion of the exterior of the shoe upper is not covered by the stabilizing element, the portion being located between the stabilizing element and the outsole. The portion may be at least partially bounded by an axis extending substantially perpendicularly from the outsole to the stabilizing element. More specifically, the axis may extend substantially perpendicularly from the plane of the extent of the shoe outsole to the most posterior point of the stabilizing element. It will be understood that the axis may be an imaginary axis and may serve to define the portion. The portion may avoid the application of uncomfortable pressure to the Achilles area. In particular, the portion may avoid the stabilizing element exerting pressure on the attachment of the Achilles tendon. Thus, the comfort of the shoe may be improved and/or irritation of the Achilles tendon may be avoided. It will be understood that further portions of the shoe upper, other than the portion of the exterior of the shoe upper located between the stabilizing element and the outsole, may also not be covered by the stabilizing element.

Furthermore, the rear side edge of the lower part of the stabilizing element may extend upward from the outsole toward the foot opening of the shoe upper and backward toward the heel region of the shoe, with the angle between the rear side edge of the lower part of the stabilizing element and the plane of the outsole's flaring being preferably 10° to 90°, more preferably 15° to 60°, even more preferably 20° to 50°, and most preferably 30° to 40°. The rear side edge of the lower part may at least partially limit the stabilizing element in the rear direction. Furthermore, the stabilizing element may be at least partially limited in the rear direction by the rearmost edge of the upper part of the stabilizing element, which may be offset from the rearmost line of the upper extending upward from the outsole toward the foot opening. The rearmost edge of the upper part may be located in the upward direction from the rear side edge of the lower part. The stabilizing element may be completely limited in the rear direction by the rearmost edge of the upper part and/or the rear side edge of the lower part. From the above, it will be understood that the above-mentioned portions of the exterior of the shoe upper that are not covered by the stabilizing element and are located between the stabilizing element and the outsole may alternatively be described.

It will be understood that the following is directed to a first alternative of the first aspect of the invention and a second alternative of the first aspect of the invention. Further, in accordance with the present invention, the term "rearward" in relation to a shoe refers to a direction from the tip of the shoe toward the Achilles region of the shoe. Thus, the "rearmost" point of a shoe element is the point that has the greatest distance from the tip of the shoe. Further, in accordance with the present invention, the term "upward" refers to a direction from the outsole toward the shoe upper.

The shoe according to the invention may be a sports shoe, a day shoe, a casual shoe, and/or a work shoe. Furthermore, the shoe may be a soccer shoe, a running shoe, a mountaineering shoe, a climbing boot, a ski boot, a cross-country ski boot, and/or a basketball shoe. The above examples are not conclusive.

The shoe upper may comprise a polymeric material and/or a natural material, such as leather and/or natural fibers. Additionally, the shoe upper may comprise a woven material, a knitted material, a material having unidirectional fibers, and/or a material that does not contain fibers. Preferably, the material of the main portion of the shoe upper has a lower stiffness than the material of the inner layer and/or the outer layer of the stabilizing element.

The stabilizing element may serve to fix the wearer's heel in the shoe. In particular, the stabilizing element may press the heel towards the sole of the shoe. This may primarily push the calcaneus towards the sole of the shoe, preferably without loading the Achilles region, in particular the Achilles tendon attachment. By fixing the wearer's heel in the shoe, instability due to heel slippage inside the shoe may be avoided. The stabilizing element may therefore at least indirectly stabilize the wearer's ankle. Furthermore, by at least indirectly stabilizing the wearer's ankle, ankle sprains may be avoided. The term ankle in the present invention may also be referred to as the ankle joint.

The stabilizing element may be in contact with the outsole. In this regard, the stabilizing element may extend from the rear half of the shoe. Furthermore, the stabilizing element may extend from the heel region of the shoe and/or the sole region of the shoe. In accordance with the present invention, the heel region may be referred to as the region surrounding the heel and/or calcaneus of the wearer. The foot opening may be referred to as the throat opening.

The use of at least two layers, an inner layer and an outer layer, may allow a stabilization gradation to be realized. By way of example, areas of the shoe upper that require less stabilization may be covered with only one layer, and areas that require more stabilization may be covered with at least two layers. Furthermore, with at least two layers of stabilization elements, a separation of functions may be realized. The inner layer may be harder than the outer layer and/or may be designed to provide a stable shape. The outer layer may be more elastic than the inner layer and/or may be designed to fasten the inner layer towards the inside of the shoe. Thus, using the separation of functions, the stabilization element itself may be given a stable shape, which may further provide sufficient pressure in the heel and/or ankle areas. Both aspects contribute to an improved stabilization. Furthermore, in alternative embodiments, the outer layer may be harder than the inner layer and/or may be designed to provide a stable shape. The inner layer may be more elastic than the outer layer and/or may be designed to follow the shape of the foot.

The stabilizing element may comprise further layers in addition to the inner and outer layers. An adhesive layer may be applied between the inner layer and the exterior of the shoe upper. By way of further example, an adhesive layer may also be applied between the inner and outer layers.

The stabilizing element extending along the exterior of the shoe upper may be fixedly attached to the exterior of the shoe upper. In particular, the inner layer and/or the outer layer may be sewn, glued, and/or heat welded to the exterior of the shoe upper. Thus, stabilization utilizing the stabilizing element may be further improved.

The exterior area of the shoe upper, which is not covered by the stabilizing element and is located between the stabilizing element and the outsole, may have a size of at least 100 mm ² , preferably at least 150 mm ² , more preferably at least 200 mm ² , even more preferably at least 250 mm ² and most preferably at least 300 mm ² . These sizes ensure that pressure on the Achilles area is minimized. In particular, pressure on the Achilles tendon insertion can be at least partially avoided.

In the shoe according to the second alternative of the first aspect, the portion of the exterior of the shoe upper that is not covered by the stabilizing element and is located between the stabilizing element and the outsole may transition continuously to a further portion of the exterior of the shoe upper that is not covered by the stabilizing element. In this regard, the further portion extends into a portion of the shoe upper that is configured to receive the Achilles region and/or the Achilles tendon attachment, the further portion preferably extending from the lateral side of the shoe to the medial side of the shoe. The said further portion may additionally avoid the application of uncomfortable pressure on the Achilles region. In particular, the said further portion may avoid the stabilizing element exerting pressure on the attachment of the Achilles tendon. Furthermore, the flexibility of the shoe upper may not be hindered by the stabilizing element in the Achilles region and/or at the Achilles tendon attachment. Thus, the comfort of the shoe may be improved and/or irritation of the Achilles tendon may be avoided.

The stabilizing element may have a wing, parallelogram, trapezoid, elliptical, and/or rectangular shape. In this regard, these shapes may include rounded edges. Furthermore, it will be understood that no clear geometric equivalent is required. In particular, the inner layer and/or the outer layer may have a wing, parallelogram, trapezoid, elliptical, and/or rectangular shape. These shapes may serve to optimally cover the ankle area. In particular, a parallelogram shape may be beneficial since one side may be attached to or integrally molded with the outsole, in which case two parallel sides extend toward and optionally into the heel area and upward toward the foot opening. As stated above, no clear geometric equivalent of the parallelogram shape is required. Thus, it will be understood that with respect to the parallelogram shape, the two parallel sides extending toward and optionally into the heel region and extending upward toward the foot opening need not be precisely parallel.

The shape of the stabilizing element may be limited by at least two straight edges extending upwards towards the foot opening along the exterior of the shoe upper and backwards towards the heel area, the two edges preferably having a length of at least 10 mm, more preferably at least 15 mm, even more preferably at least 20 mm, most preferably at least 25 mm. It will be understood that the straight edges do not necessarily have to be exactly straight in a geometric sense. The straight edges may be substantially straight in a geometric sense. This may include at least one of the straight edges being slightly curved, for example with a decreasing or increasing gradient as viewed from the surface defined by the outsole. The two straight edges may limit the shape of the inner layer and/or the outer layer. In this regard, the angle between the outsole and at least one of the straight edges may be in the range of 5 degrees to 70 degrees, preferably 10 degrees to 60 degrees, more preferably 15 degrees to 50 degrees, even more preferably 20 degrees to 40 degrees, most preferably 25 degrees to 35 degrees. The two straight edges limit the shape of the stabilizing element, ensuring that no or reduced pressure is applied to the Achilles tendon attachment.

The inner and/or outer layers may each have a thickness of 0.01 mm to 3 mm, preferably 0.1 mm to 2 mm, more preferably 0.2 mm to 1 mm, even more preferably 0.25 mm to 0.5 mm, and most preferably 0.28 mm to 0.32 mm. Said thickness range allows a good compromise between stiffness, i.e. stabilization of the foot, and comfort.

The stabilizing element may extend at least partially into the lateral ankle region or the medial ankle region. The term ankle region according to the present invention may generally refer to the region of the shoe upper that covers the region of the foot that includes the ankle, i.e., the ankle joint. The term medial ankle region according to the present invention may generally refer to the region of the shoe upper that covers the region of the foot that includes the ligaments between the tibia and the calcaneus. Additionally, the term lateral ankle region according to the present invention may generally refer to the region of the shoe upper that covers the region of the foot that includes the ligaments between the fibula and the calcaneus.

The outer layer of the shoe stabilizing element according to the second alternative of the first aspect of the invention may be integrally molded with the outsole of the shoe. In this context, "integrally molded" may refer to an aspect in which no material boundary can be discerned between the outer layer and the outsole. In particular, the outer layer and the outsole may be integrally formed by injection molding, direct casting and/or foaming. Furthermore, the outer layer and the outsole may comprise a polymeric material. In particular, the outer layer and the outsole may comprise polyamide, polyurethane and/or rubber. By integrally molding the outer layer with the outsole, the outer layer may be given a higher pre-tensioning force relative to the inner layer. Thus, a higher pressure on the heel area of the wearer may be applied. Furthermore, the required work steps may be reduced.

The shape of the inner layer may correspond to the shape of the outer layer. The term "corresponding" may refer to an aspect in which the shape of the outer layer is located within the inner layer and/or at least one edge of the inner layer and/or the outer layer is substantially parallel. This allows loads to be continuously transferred between the inner layer and the outer layer. Thereby, uniform stress distribution may be achieved. Thus, material damage due to stress concentrations may be avoided.

The medial layer may extend beyond the lateral layer. Preferably, the medial layer may extend beyond the lateral layer backwards towards the Achilles region and/or upwards towards the foot opening. Thus, the medial layer may improve the support of the stabilizing element to the foot. Furthermore, the medial layer may extend beyond the lateral layer forwards towards the toe area. The lateral layer may thereby serve to push the medial layer towards the interior of the shoe. Thus, the area of the shoe upper to be stabilized can be easily modified by adapting the medial layer, whereas the lateral layer may remain unchanged.

The inner layer may have a larger profile than the outer layer. In particular, the inner layer may serve to cover the area of the shoe upper that is to be stabilized, and the outer layer may thereby serve to push the inner layer towards the inside of the shoe. Thus, the area of the shoe upper that is to be stabilized can be easily modified by adapting the inner layer, whereas the outer layer may remain unchanged.

The inner layer may consist of a composite layer, which is preferably a fiber-reinforced layer. The term "composite" may refer to the aspect where the layer consists of at least two materials with different material properties. In this regard, the composite layer may comprise a fiber-reinforced polymer. In particular, the composite layer may comprise a carbon fiber-reinforced polymer, a glass fiber-reinforced polymer, a natural fiber-reinforced polymer, a ceramic fiber-reinforced polymer and/or an aramid fiber-reinforced polymer. Thus, the inner layer may provide higher strength and/or higher stiffness. Furthermore, the weight of the inner layer may be reduced.

Additionally, the inner layer may have anisotropic material properties. Anisotropic material properties may be utilized to tailor the inner layer to a particular loading scenario. By way of example, fibers within the inner layer may be oriented to provide high bending stiffness and low torsional stiffness. Thus, the shoe may provide flexibility while at the same time providing stability to prevent ankle sprains.

The outer layer may include at least one of the following materials: ethylene vinyl acetate (EVA), polyamide 11 (PA11), polyamide 12 (PA12), polyether block amide (PEBA), and/or thermoplastic elastomer (TPE), such as thermoplastic polyurethane (TPU). Thus, the outer layer may provide high rigidity for fastening the inner layer to the shoe upper. Furthermore, the outer layer may thereby be integrally molded with the outsole.

The outer layer may have a triangular cross section. In this regard, the cross section of the outer layer may comprise three corners. The corners may be at least partially rounded. Furthermore, the cross section of the outer layer may comprise three edges. In this regard, the three edges may be straight or partially curved. In particular, one edge and/or two of the corners may be in contact with the inner layer. The triangular cross section increases the area moment of inertia of the outer layer, especially compared to a substantially rectangular cross section with the same area. Thus, the stiffness of the outer layer may be improved.

The outer layer may have a varying thickness. Illustratively, a first portion of the outer layer may have a greater thickness than a second portion of the outer layer. Illustratively, the first and second portions may be separated by a step in the surface of the outer layer. The step may be a discontinuous change in the surface of the outer layer.

The outer layer may comprise a reinforcing rib. The reinforcing rib may comprise a step dividing the first and second parts of the outer layer, as defined above. The reinforcing rib may extend from the outsole along the outer layer of the stabilizing element. Preferably, the outer layer of the stabilizing element is integrally formed with the outsole or a component part of the outsole. The reinforcing rib may extend essentially along the entire length of the stabilizing element. The reinforcing rib may extend at least partially along the outsole. The reinforcing rib increases the area moment of inertia of the outer layer. Thus, the stiffness of the outer layer may be improved.

The outer layer may be a composite layer. By having the outer layer be a composite layer, the rigidity of the stabilizing element may be further increased. Thus, the stabilizing element may provide even greater stability.

The outsole may comprise a plurality of parts. By way of example, the outsole may be formed as a modular assembly. In this regard, at least one module of the modular assembly of the outsole may be a composite module. The composite module is preferably a fiber-reinforced module. The term "composite" may refer to an aspect in which a part is made of at least two materials with different material properties. In this regard, the composite module may comprise a fiber-reinforced polymer. In particular, the composite module may comprise a carbon fiber-reinforced polymer, a glass fiber-reinforced polymer, a natural fiber-reinforced polymer, a ceramic fiber-reinforced polymer and/or an aramid fiber-reinforced polymer. By way of example, the composite module may be, but is not limited to, a plate or a rod. The outsole may comprise a plurality of composite modules.

Furthermore, at least one module may be connected to the inner layer and/or the outer layer of the stabilizing element. In particular, the module may be integrally molded with the inner layer and/or the outer layer. In this regard, "integrally molded" may refer to an aspect in which no material boundary is discernible between the outer layer and the module.

Furthermore, the line on the exterior of the shoe upper, which runs substantially straight along the Achilles region from the outsole to the foot opening, may not be covered by the medial and/or lateral layers. In this regard, preferably said line is not covered by the stabilizing element. Said line on the exterior of the shoe upper, which runs substantially straight along the Achilles region from the outsole to the foot opening and is not covered by the medial and/or lateral layers, may increase the mobility of the Achilles tendon and improve comfort and/or functionality. This is because the influence of the medial and/or lateral layers on the stretching and/or relaxation of the Achilles tendon is at least reduced. In particular, because in that case the stretching and/or relaxation of the Achilles tendon may be limited mainly by the material of the shoe upper. These advantages are particularly relevant when the shoe is provided with two stabilizing elements as described below.

The shoe may comprise two stabilizing elements as defined above, with a first stabilizing element being arranged on the lateral side of the shoe and more preferably a second stabilizing element being arranged on the medial side of the shoe. Thereby, a shoe with improved lateral and medial stability may be provided. Thus, the risk of sprains in the lateral and medial directions is reduced. Furthermore, the stabilizing elements may avoid applying pressure to the Achilles region, in particular the Achilles tendon insertion, as described above.

The inner layer of the first stabilizing element and the inner layer of the second stabilizing element may be connected to each other by a first connecting element. The first connecting element may extend at least partially along the sole region of the shoe. The first connecting element may be integrally molded with the inner layer of the first stabilizing element and the inner layer of the second stabilizing element.

The inner layer of the first stabilizing element and the inner layer of the second stabilizing element may be connected to a module of the modular assembly of the outsole. In particular, the inner layer may be integrally molded with the module as described above. Furthermore, the inner layer of the first stabilizing element and the inner layer of the second stabilizing element may be connected to the same module of the modular assembly of the outsole. Thus, the inner layers may be connected to each other via the module. This may further improve stabilization without applying pressure to the Achilles region, particularly the Achilles tendon insertion.

The outer layer of the first stabilizing element and the outer layer of the second stabilizing element may be connected to each other by a second connecting element. The second connecting element may extend at least partially along the sole region of the shoe. The second connecting element may be integrally molded with the outer layer of the first stabilizing element and the outer layer of the second stabilizing element.

The outer layer of the first stabilizing element and the outer layer of the second stabilizing element may be connected to a module of the modular assembly of the outsole. In particular, the outer layer may be integrally molded with the module as described above. Furthermore, the outer layer of the first stabilizing element and the outer layer of the second stabilizing element may be connected to the same module of the modular assembly of the outsole. Thus, the outer layers may be connected to each other via the module. This may further improve stabilization without applying pressure to the Achilles region, particularly the Achilles tendon insertion.

The first stabilizing element may extend at least partially into the lateral ankle region and the second stabilizing element may extend at least partially into the medial ankle region. Thus, the ankle, i.e., the ankle joint, may be further protected from sprains and/or injuries.

The first and second stabilizing elements may be configured to help anchor the calcaneus, thereby preferably avoiding pressure on the Achilles region and/or Achilles tendon insertion. Attaching the calcaneus may secure the wearer's heel within the shoe. Attaching the wearer's heel within the shoe may avoid instability due to heel slippage within the shoe. Avoiding pressure on the Achilles region and/or Achilles tendon insertion may improve comfort and reduce the risk of irritation or even inflammation.

Furthermore, the first stabilizing element and the second stabilizing element may not cover the portions of the shoe upper that are configured to receive the Achilles region and/or the Achilles tendon attachment. Thus, the portions of the shoe upper that are configured to receive the Achilles region and/or the Achilles tendon attachment may remain uncovered from the stabilizing elements. By avoiding covering such portions, pressure on the Achilles region and/or the Achilles tendon attachment may be avoided, thus improving comfort and reducing the risk of irritation or even inflammation.

The first and second stabilizing elements may be spaced apart by a distance that extends along the exterior of the shoe upper and at least partially along the Achilles region. This may avoid uncomfortable pressure on the Achilles region. In particular, the stabilizing elements may be avoided from exerting pressure on the attachment of the Achilles tendon. Thus, the comfort of the shoe may be improved and/or irritation of the Achilles tendon may be avoided. It will be appreciated that the distance may be represented by a curve, since it extends at least partially along the Achilles region and along the exterior of the shoe upper. Furthermore, the distance may be measured from the most posterior point of the first stabilizing element to the most posterior point of the second stabilizing element. The distance may be in the range of 10 mm to 50 mm, preferably in the range of 20 mm to 35 mm, more preferably in the range of 25 mm to 30 mm. It has been found that said distance provides sufficient stabilization while at the same time avoiding pressure on the Achilles region. The distance may be measured in a plane perpendicular to the plane of the flared outsole of the shoe.

Furthermore, at least one of the inner or outer layers of the stabilizing element may be located between the innermost and outermost layers of the shoe upper. Thus, at least one of the inner or outer layers of the stabilizing element may extend along the exterior of the inner or intermediate layer of the shoe upper.

As stated above, the first objective underlying the present invention is at least partially achieved by the second aspect of the present invention.

A second aspect of the present invention is a shoe, comprising:
Shoe upper and
The outsole and
A first stabilization element,
a first stabilizing element extends from a lateral side of the outsole upwardly toward an entry opening in the shoe upper and rearwardly toward (e.g., into) a heel region of the shoe;
a first stabilizing element comprising an inner layer and an outer layer;
a first stabilizing element, the first stabilizing element extending along an exterior of the shoe upper;
a second stabilization element,
a second stabilizing element extends from a medial side of the outsole upwardly toward an entry opening in the shoe upper and rearwardly toward (e.g., into) a heel region of the shoe;
a second stabilizing element comprising an inner layer and an outer layer;
a second stabilizing element, the second stabilizing element extending along an exterior of the shoe upper;
The shoe includes a first stabilizing element and a second stabilizing element spaced apart a distance that extends along an exterior of the shoe upper and at least partially along the Achilles region.

The shoe according to the second aspect of the present invention may avoid uncomfortable pressure on the Achilles region. In particular, pressure on the attachment of the Achilles tendon by the stabilizing element may be avoided. Thus, the comfort of the shoe may be improved and/or irritation of the Achilles tendon may be avoided. It will be understood that the distance may be represented by a curve, since it extends at least partially along the Achilles region and along the exterior of the shoe upper. Furthermore, the distance may be measured from the most posterior point of the first stabilizing element to the most posterior point of the second stabilizing element. The distance may be in the range of 10 mm to 50 mm, preferably in the range of 20 mm to 35 mm, more preferably in the range of 25 mm to 30 mm. It has been found that said distance provides sufficient stabilization while at the same time avoiding pressure on the Achilles region. The distance may be measured in a plane perpendicular to the plane of the extension of the shoe outsole. The top most rear edge of the first stabilizing element according to the first aspect of the invention may include the top most rear point of the first stabilizing element. The top most rear edge of the second stabilizing element according to the first aspect of the invention may include the top most rear point of the second stabilizing element. Furthermore, in an alternative embodiment, the distance may be measured from the top most rear edge of the first stabilizing element to the top most rear edge of the second stabilizing element.

In the shoe according to the second aspect of the invention, the line on the exterior of the shoe upper, which runs substantially straight along the Achilles region from the outsole to the foot opening, may not be covered by the inner and/or outer layers of the first and/or second stabilizing element. In this regard, preferably, said line is not covered by either the first or the second stabilizing element. Said line on the exterior of the shoe upper, which runs substantially straight along the Achilles region from the outsole to the foot opening and is not covered by the inner and/or outer layers of the first and/or second stabilizing element, may increase the mobility of the Achilles tendon, improving comfort and/or functionality. This is because the influence of the inner and/or outer layers on the stretching and/or relaxation of the Achilles tendon is at least reduced. In particular, this is because in that case the stretching and/or relaxation of the Achilles tendon may be limited mainly by the material of the shoe upper.

It is understood that features of the first aspect of the invention may be combined with the second aspect of the invention. In particular, the first stabilizing element and/or the second stabilizing element of the second aspect of the invention may comprise the features of the stabilizing element of the first aspect of the invention described herein. Thus, advantages of the first aspect of the invention may also apply to the second aspect of the invention and vice versa.

As stated above, the first objective underlying the present invention is at least partially achieved by the third aspect of the present invention.

A third aspect of the present invention relates to a shoe comprising a shoe upper, an outsole and a stabilizing element. The stabilizing element extends from the outsole upwards towards an entry opening of the shoe upper and backwards towards a heel region of the shoe. Furthermore, the stabilizing element comprises an inner layer and an outer layer. Furthermore, the stabilizing element extends along an exterior of the shoe upper. Furthermore, the stabilizing element extends at least partially along a midfoot region of the upper. The midfoot region may include a region of the upper corresponding to the metatarsals. It is understood that the features of the first aspect of the present invention may be applied to the third aspect of the present invention. In particular, the first stabilizing element of the third aspect of the present invention may comprise the features of the stabilizing element of the first aspect of the present invention described herein. Thus, the advantages of the first aspect of the present invention may also apply to the third aspect of the present invention and vice versa.

Further, when the shoe is worn, the rearmost edge of the stabilizing element may be disposed in a forward direction from the ankle on one side of the foot on which said stabilizing element is disposed. Furthermore, the stabilizing element may substantially anchor the midfoot portion of the wearer's foot. Furthermore, the stabilizing element may extend from the front half of the shoe. In this regard, the proposed shape of the stabilizing element of the first aspect of the invention may enable the stabilizing element to be adapted to the shape of the wearer's foot and provide improved stabilization in the midfoot portion.

As stated above, the second objective underlying the present invention is at least partially achieved by the fourth aspect of the present invention.

A fourth aspect of the present invention relates to a method for manufacturing at least one containment element in a shoe upper, the method including the steps of providing a shoe upper, embossing at least one recess in the shoe upper, and at least partially filling the recess with foam.

The containment element according to the present invention may be referred to as an embossed recess that is at least partially filled with foam. The containment element is positioned to keep the wearer's foot secured within the shoe. In particular, the containment element may serve to contain the wearer's foot within the shoe. Additionally, the containment element may prevent the foot from slipping off the midfoot region of the shoe.

The shoe upper may include polymeric materials and/or natural materials such as leather and/or natural fibers. Additionally, the shoe upper may include woven materials, knitted materials, materials with unidirectional fibers, and/or materials without fibers. The shoe upper may be for sports shoes, day shoes, casual shoes, and/or work shoes. Additionally, the shoe upper may be for soccer shoes, running shoes, mountaineering shoes, climbing boots, ski boots, cross-country ski boots, and/or basketball shoes. The above examples are not intended to be exhaustive.

The embossing step creates the necessary space for the foam. Moreover, the embossing step reduces the relaxation and/or stretching of the formed recesses, which are at least partially filled with foam. Thus, a higher stiffness and therefore stability of the containment element can be obtained. This is particularly required for shoes without laces, such as laceless soccer shoes.

The embossing step may be performed using an embossing machine. The embossing machine may include a positive die and/or a negative die. Furthermore, the embossing step may include heating the shoe upper and/or at least one die, so that the material of the shoe upper may at least partially exceed its glass transition temperature during embossing. Furthermore, the shoe upper may be at least partially melted during embossing, so that the shape of the indentation may be permanently formed.

During embossing, the surfaces adjacent the indentations may be at least partially melted and/or pressurized, thus increasing the hardness of the adjacent surfaces, which may further improve the stability of the containment element.

The foam within the recess may be compressed when the foot is inserted into the shoe upper. Due to this compression, the foam may exert pressure against the foot. The pressure may prevent the foot from slipping out of the shoe upper. The foam may be a polymer foam. In particular, the foam may be ethylene vinyl acetate foam, neoprene foam, polyurethane foam, polyethylene foam, polystyrene foam, or polyethylene terephthalate foam. Ethylene vinyl acetate foam and neoprene foam in particular provide high durability against environmental conditions.

The method may further include providing a layer over the indentation, whereby the indentation is at least partially closed. Furthermore, the indentation may be completely closed by the layer. The layer may be a fabric layer, such as a mesh fabric layer. Furthermore, the layer may serve to secure and/or protect the foam inside the indentation. This layer avoids irritation of the foot in contact with the shoe upper by the edges of the embossed indentation.

The indentations may be embossed on the inner surface of the shoe upper such that the shape of the indentations preferably protrudes on the exterior of the shoe upper. Thus, the foam may protrude into the interior of the shoe upper. Thus, the foam may exert pressure on the foot in contact with the inner surface of the shoe upper.

The foam may protrude inwardly and/or outwardly from the shoe upper relative to a surface of the shoe upper adjacent the indentation that is not embossed. Thus, the foam may have sufficient volume to be compressed, thereby exerting sufficient force on a foot in contact with the shoe upper.

The indentations may be embossed on the lateral and/or medial sides of the shoe upper. Thus, the lateral and/or medial sides of the foot may be secured within the shoe upper.

The recess may have a cross section that is at least partially annular, oval, elliptical, triangular, and/or rectangular. The cross section allows adapting the spring and/or damping characteristics of the containment element. By way of example, a triangular cross section may provide a more gradual spring characteristic than a rectangular cross section. The gradual spring characteristic may provide comfort while at the same time providing sufficient protection against slipping off the shoe upper.

The recess may be elongated along the shoe upper, so that when the foot contacts the shoe upper, the foam inside the recess may exert a force along the shoe upper. Thus, multiple parts of the foot may be secured and/or damped. Furthermore, the force exerted on the foot may be distributed. Thus, the shoe upper may be more comfortable.

The recess may extend from the ankle region of the shoe upper into the midfoot region of the shoe upper. In particular, the recess may extend from the ankle region of the shoe upper into the midfoot region at the top of the shoe upper. Thus, the foot may be prevented from slipping off at the midfoot region. Furthermore, at the same time, the foot may be prevented from slipping off at the ankle region.

The term ankle in the present invention may also be referred to as the ankle joint. Furthermore, the term ankle region in the present invention generally refers to the portion of the shoe upper that covers the portion of the foot that includes the ankle, i.e., the ankle joint. The term medial ankle region in the present invention may refer to the portion of the shoe upper that covers the portion of the foot that includes the ligaments between the tibia and the calcaneus. Furthermore, the term lateral ankle region in the present invention may refer to the portion of the shoe upper that covers the portion of the foot that includes the ligaments between the fibula and the calcaneus.

The recess may have a length and a width, the ratio of length to width being preferably 5 to 18, more preferably 7 to 16, even more preferably 9 to 14, and most preferably 10 to 12. In this regard, the ratio may be determined by the maximum width and/or the maximum length. These ratios provide improved stabilization while at the same time being comfortable for the wearer's foot. In a particularly preferred embodiment, the ratio of length to width is 5 to 8.

The recess may extend along 20%-80% of the length of the shoe upper, preferably 25%-75%, more preferably 30%-65%, even more preferably 40%-60%, and most preferably 45%-55%. These ranges have been found to provide sufficient pressure on the wearer's foot while avoiding excess recess space.

The cross-sectional area of the recess and/or the width of the recess may reach a maximum value at the middle of the recess, which is preferably spaced from one end of the recess by a factor of 0.3 to 0.7, preferably 0.35 to 0.65, more preferably 0.4 to 0.6, even more preferably 0.45 to 0.55, and most preferably 0.48 to 0.52, multiplied by the length of the recess. This allows the foam of the containment element to apply the highest pressure to the part of the foot that is located in the middle between the top midfoot part and the ankle part. This part of the foot that is most likely to slip off is therefore subjected to the greatest pressure. Furthermore, the foot may be pushed backwards within the shoe upper into the heel part. This may provide additional protection against slipping off.

The cross-sectional area of the recess and/or the width of the recess may reach a minimum at the midfoot and/or ankle regions. This allows the pressure of the containment element to decay towards the ends. Thus, comfort for the wearer may be improved. Furthermore, pressure application may be reduced in areas where less pressure is needed and/or where pressure is uncomfortable, i.e., the ankle and/or midfoot regions.

The first recess may be embossed on the lateral side of the shoe upper and the second recess may be embossed on the medial side of the shoe upper. Thus, the lateral and medial sides of the foot may be equally secured against slipping off. The second recess may be located higher than the first recess, i.e. closer to the foot opening. Thus, the positioning of the containment element is adapted to the anatomy of the wearer's foot. It will be appreciated that the first recess and the second recess may be at least partially filled with foam.

Furthermore, the second object of the present invention is at least partially achieved by a shoe upper comprising at least one containment element, the containment element being manufactured by the method as described above.

Furthermore, the second object of the present invention is at least partially achieved by a shoe comprising a shoe upper as described in the previous paragraph. In this regard, the shoe may be a sports shoe, a day shoe, a casual shoe, and/or a work shoe. Furthermore, the shoe may be a soccer shoe, a running shoe, a mountaineering shoe, a climbing boot, a ski boot, a cross-country ski boot, and/or a basketball shoe. The above examples are not exhaustive.

The accompanying drawings are briefly described below.

FIG. 1 illustrates a side view of an exemplary shoe according to a first aspect of the present invention. 1 illustrates a side view of an exemplary shoe according to the first and fourth aspects of the present invention. FIG. 2 shows a detailed view of a rear portion of an exemplary shoe in a side view according to the first and fourth aspects of the present invention. FIG. 2 shows a detailed view of a rear portion of an exemplary shoe according to the first and fourth aspects of the present invention, viewed from the inside. FIG. 2 shows a detailed side view of an exemplary shoe according to the first and fourth aspects of the present invention. 11A-11D illustrate an exemplary method for manufacturing at least one containment element within a shoe upper according to a fourth aspect of the present invention. FIG. 2 shows a rear view of a second exemplary shoe according to the first, second and fourth aspects of the present invention. FIG. 2 shows a bottom view of a second exemplary shoe according to the first and fourth aspects of the present invention. FIG. 13 shows a front view of a third exemplary shoe according to the fourth aspect of the present invention. FIG. 2 is a view of a second exemplary shoe according to the first and fourth aspects of the present invention from an inside view. FIG. 2 is a detailed view of a second exemplary shoe according to the first and fourth aspects of the present invention. 2 is a detailed view of a second exemplary shoe according to the first, second and fourth aspects of the present invention; FIG.

Figure 1 shows an exemplary shoe 1 according to a first aspect of the invention in a side view. The shoe 1 is a soccer shoe. However, it is understood that the shoe may also be a running shoe, a mountaineering shoe, a climbing boot, a ski boot, a cross-country ski boot, and/or a basketball shoe. Furthermore, the shoe may be any other sports shoe, a day shoe, a casual shoe, and/or a work shoe. The above examples are not exhaustive.

According to a first aspect of the present invention, FIG. 1 shows a shoe 1 comprising a shoe upper 2, an outsole 3 and a stabilizing element 10.

The stabilizing element 10 serves to secure the wearer's heel within the shoe 1 and to stabilize the wearer's ankle. By securing the wearer's heel within the shoe 1, instability due to heel slippage within the shoe can be avoided. Furthermore, by stabilizing the wearer's ankle, ankle sprains can be avoided.

The stabilizing element 10 extends upward from the outsole 3 towards the foot opening 4 of the shoe upper 2 and backward towards the heel region 5 of the shoe 1. In particular, the stabilizing element 10 extends backward into the heel region 5 of the shoe 1. The stabilizing element 10 comprises an outer layer 12. Furthermore, the stabilizing element 10 extends along the exterior 6 of the shoe upper 2. Thereby, the outer layer 12 is in contact with the exterior 6 of the shoe upper 2. It will be appreciated that the outer layer 12 may be attached to the exterior 6 of the shoe upper 2, for example, by heat welding, gluing and/or sewing. Furthermore, a portion 13 of the exterior 6 of the shoe upper 2 located between the stabilizing element 10 and the outsole 3 is not covered by the stabilizing element 10.

The area 13 not covered by the stabilizing element 10 avoids or at least reduces pressure on the Achilles area. In particular, the area may prevent the stabilizing element 10 from exerting pressure on the attachment of the Achilles tendon. Thus, the comfort of the shoe 1 may be improved and/or irritation of the Achilles tendon may be avoided.

As further shown in FIG. 1 and in accordance with the first aspect of the present invention, the outer layer 12 of the stabilizing element 10 is integrally molded with the outsole 3 of the shoe 1. By integrally molding the outer layer with the outsole, a higher pre-tensioning of the outer layer can be achieved. Thus, a higher pressure on the heel area of the wearer can be applied. Furthermore, the manufacturing steps required can be reduced. It will be appreciated that in FIG. 1, since the stabilizing element comprises only one layer, the "outer layer" may be more generally referred to as a "layer."

Figure 2 shows an exemplary shoe 1 according to the first and fourth aspects of the present invention in a side view. The shoe 1 is a laceless soccer shoe. However, it is understood that the shoe may also be a running shoe, a mountaineering shoe, a climbing boot, a ski boot, a cross-country ski boot, and/or a basketball shoe. Furthermore, the shoe may be any other sports shoe, a day shoe, a casual shoe, and/or a work shoe. The above examples are not exhaustive.

According to a first aspect of the present invention, FIG. 2 shows a shoe 1 comprising a shoe upper 2, an outsole 3 and a stabilizing element 10.

The stabilizing element 10 serves to secure the wearer's heel within the shoe 1 and to stabilize the wearer's ankle. By securing the wearer's heel within the shoe 1, instability due to heel slippage within the shoe can be avoided. Furthermore, by stabilizing the wearer's ankle, ankle sprains can be avoided.

The stabilizing element 10 extends upward from the outsole 3 towards the foot opening 4 of the shoe upper 2 and backward towards, i.e. into, the heel region 5 of the shoe 1. The stabilizing element 10 comprises an inner layer 11 and an outer layer 12. Furthermore, the stabilizing element 10 extends along the exterior 6 of the shoe upper 2. Furthermore, a portion 13 of the exterior 6 of the shoe upper 2, which is located between the stabilizing element 10 and the outsole 3, is not covered by the stabilizing element 10. The inner layer 11 and the outer layer 12 are made of different materials.

The area 13 not covered by the stabilizing element 10 avoids or at least reduces pressure on the Achilles area. In particular, the area (13) may prevent the stabilizing element 10 from exerting pressure on the attachment of the Achilles tendon. Thus, the comfort of the shoe 1 may be improved and/or irritation of the Achilles tendon may be avoided.

The area 13 of the exterior 6 of the shoe upper 2, which is not covered by the stabilizing element 10 and is located between the stabilizing element 10 and the outsole 3, transitions continuously to a further area 18 of the exterior 6 of the shoe upper 2, which is not covered by the stabilizing element 10. In this regard, as shown in more detail for example in Figs. 7 and 11, the further area 18 extends into a part of the shoe upper 2 configured to receive the Achilles area and/or the Achilles tendon attachment, whereby the further area 18 extends from the lateral side of the shoe 1 to the medial side of the shoe 1. The said further area 18 may avoid the application of uncomfortable pressure on the Achilles area. In particular, the said further area 18 may avoid the stabilizing element 10 exerting pressure on the attachment of the Achilles tendon. Furthermore, the flexibility of the shoe upper 2 may not be hindered by the stabilizing element 10 in the Achilles area and/or at the Achilles tendon attachment. Thus, the comfort of the shoe 1 may be improved and/or irritation of the Achilles tendon may be avoided.

The use of different materials allows the separation of functions. The inner layer is preferably made of a material with higher stiffness and/or strength than the outer layer. Furthermore, the outer layer may be made of a material with higher elasticity than the inner layer. Thus, the inner layer can provide stiffness and/or strength, while the outer layer can fasten the inner layer to the shoe upper. The stabilizing element can thus be firmly fastened to the heel and/or ankle of the wearer, thereby improving stability. Furthermore, the weight of the stabilizing element can be reduced by the distinct use of materials. Furthermore, the inner layer can be adapted to the characteristics of the wearer's foot, while the outer layer can remain unchanged. Thus, the use of different materials and the separation of functions within the stabilizing element can reduce the effort of modification.

Further according to the first aspect of the invention, the shoe 1 of FIG. 2 comprises two stabilizing elements 10, 15, the first stabilizing element 10 being arranged on the lateral side of the shoe 1, and the second stabilizing element 15 being arranged on the medial side of the shoe 1, although said second stabilizing element 15 is hidden in FIG. 2 but is shown in FIG. 4. The first stabilizing element 10 extends at least partially into the lateral ankle region 7a. The first stabilizing element 10 and the second stabilizing element 15 are arranged to anchor the calcaneus and thereby to avoid applying pressure to the Achilles tendon attachment.

According to a fourth aspect of the present invention, FIG. 2 shows a shoe 1 with a shoe upper 2, the shoe upper 2 being provided with a containment element 20. The containment element 20 was manufactured according to the method 100 shown in FIG. 6.

Figure 3 shows a detailed side view of the rear portion of an exemplary shoe according to the first and fourth aspects of the present invention.

Figure 3 according to the first aspect of the invention shows that the shape of the stabilizing element 10 is limited at least by two straight edges 14a, 14b that extend along the exterior 6 of the shoe upper 2 upwards towards the foot opening and backwards towards the heel area 5. In this regard, the two edges 14a, 14b have a length of at least 15 mm. As said two straight edges 14a, 14b limit the shape of the stabilizing element 10, it can be ensured that no or only reduced pressure is applied to the Achilles tendon attachment.

As further shown in FIG. 3 and in accordance with the first aspect of the present invention, the outer layer 12 of the stabilizing element 10 is integrally molded with the outsole 3 of the shoe 1. By integrally molding the outer layer with the outsole, the outer layer may be given a higher pre-tension relative to the inner layer, and thus may be able to apply a higher pressure against the heel area of the wearer. Additionally, the required manufacturing steps may be reduced.

The shape of the inner layer 11 corresponds to the shape of the outer layer 12. This allows the load to be continuously transferred between the inner and outer layers. A uniform stress distribution can be achieved. Thus, damage to the material due to stress concentrations can be avoided. Furthermore, the inner layer 11 has a larger outer profile than the outer layer 12. The inner layer thereby serves to cover the area of the shoe upper that is to be stabilized, and the outer layer serves to push the inner layer towards the inside of the shoe.

The inner layer 11 preferably comprises a composite layer, which is preferably a fiber-reinforced layer.

Figure 4 shows a detailed view of the rear portion of an exemplary shoe according to the first and fourth aspects of the present invention, viewed from the inside.

Figure 4 according to the first aspect of the invention shows a stabilizing element 15 that extends at least partially into the medial ankle region 7b. What has been explained above with respect to the stabilizing element 10 arranged on the lateral side of the shoe upper applies equally to the stabilizing element 15 arranged on the medial side of the shoe upper. However, in other embodiments, the lateral and medial stabilizing elements may differ, for example with respect to their size, shape, material, etc.

Figure 5 shows a detailed side view of an exemplary shoe according to the first and fourth aspects of the present invention.

5 according to a fourth aspect of the present invention shows a detail of the shoe 1 shown in FIG. 2, the shoe 1 comprising a shoe upper 2, the shoe upper 2 comprising a containment element 20. The containment element 20 has been manufactured according to a method 100 shown in FIG. 6. The method 100 comprises a step 110 of providing a shoe upper 2, a step 120 of embossing at least one recess 21 in the shoe upper 2, and a step 130 of at least partially filling the recess 21 with foam. Furthermore, the method 100 may further comprise a step 140 of providing a layer on the recess 21, whereby the recess 21 is at least partially closed.

As shown, the indentation 21 is embossed 120 into the inner surface 30 of the shoe upper 2 such that the shape of the indentation 21 protrudes onto the exterior 6 of the shoe upper 2. In this regard, the hidden foam may protrude medially and/or laterally from the shoe upper 2 as compared to the surface 23 of the shoe upper 2 adjacent the indentation 21 that was not embossed.

The recess 21 is embossed on the lateral side of the shoe upper 2 and has a cross section that is at least partially triangular. Furthermore, the recess 21 is elongated along the shoe upper 2. In this regard, the recess 21 extends from the ankle region 7a of the shoe upper 2 into the midfoot region 8 of the shoe upper 2. In particular, in FIG. 5 the recess 21 extends from the lateral ankle region 7a, whereas in FIG. 4 the recess 21 extends from the medial ankle region 7b. In this regard, the recess 21 extends along 30% to 65% of the length of the shoe upper 2. This range provides sufficient pressure on the wearer's foot while avoiding excess recess space.

Furthermore, the cross-sectional area of the recess 21 and the width of the recess 21 reach a maximum value at the middle portion of the recess 21, which is spaced from one end of the recess 21 by a length multiplied by a factor of 0.45 to 0.55. This causes the foam of the containment element to exert the highest pressure on the part of the foot that is located halfway between the top midfoot area and the ankle area. This part of the foot that is most likely to slip off is therefore subject to the greatest pressure. Furthermore, the foot may be pushed backwards within the shoe upper into the heel area. This may provide additional protection against slipping off.

Furthermore, the cross-sectional area of the recess 21 and the width of the recess 21 reach a minimum at the midfoot region 8 and the ankle regions 7a, 7b. This allows the pressure of the containment element to decay towards both ends. Thus, the comfort of the wearer may be improved.

As shown by Figures 4 and 5, the first recess 21 is embossed on the lateral side of the shoe upper 2, and the second recess 26 is embossed on the medial side of the shoe upper 2. Thus, the lateral and medial sides of the foot are equally secured against slipping off.

Figure 6 shows an exemplary method 100 for manufacturing at least one containment element 20 in a shoe upper 2 according to a fourth aspect of the present invention. The method 100 includes a step 110 of providing a shoe upper 2, a step 120 of embossing at least one recess 21 in the shoe upper 2, and a step 130 of at least partially filling the recess 21 with foam. Furthermore, the method 100 may further include a step 140 of providing a layer over the recess 21, whereby the recess 21 is at least partially closed.

7 shows a second exemplary shoe 1 according to the first, second and fourth aspects of the present invention in a rear view. In this regard, the first stabilizing element 10 and the second stabilizing element 15 are spaced apart by a distance 30 that extends at least partially along the Achilles region and along the exterior of the shoe upper 2. Thereby, uncomfortable pressure on the Achilles region may be avoided. In particular, the stabilizing elements 10, 15 may be avoided from exerting pressure on the attachment of the Achilles tendon. Thus, the comfort of the shoe 1 may be improved and/or irritation of the Achilles tendon may be avoided. As shown in FIG. 7, the distance 30 is measured from the most posterior point of the first stabilizing element 10 to the most posterior point of the second stabilizing element 15.

7 shows a second exemplary shoe 1 comprising a shoe upper 2, an outsole 3, a first stabilizing element 10 and a second stabilizing element 15, according to a second aspect of the present invention. The first stabilizing element 10 extends from a lateral side of the outsole 3 upward toward the foot opening 4 of the shoe upper 2 and backward into the heel region 5 of the shoe 1. The first stabilizing element 10 further comprises an inner layer 11 and an outer layer 12. The first stabilizing element 10 further extends along the exterior 6 of the shoe upper 2. The second stabilizing element 15 extends from a medial side of the outsole 3 upward toward the foot opening 4 of the shoe upper 2 and backward into the heel region 5 of the shoe 1. The second stabilizing element 15 further comprises an inner layer 16 and an outer layer 17. The second stabilizing element 15 further extends along the exterior 6 of the shoe upper 2. The first stabilizing element 10 and the second stabilizing element 15 are spaced apart by a distance 30 that extends along the exterior 6 of the shoe upper 2 and at least partially along the Achilles region.

Although only Fig. 7 and Fig. 12 show the first and second stabilizing elements proposed by the second aspect of the invention, it will be understood that the features shown in Fig. 8, Fig. 10 and Fig. 11 may also form part of the second aspect of the invention. This is because Fig. 7, Fig. 8 and Fig. 10-Fig. 12 all show the second exemplary shoe. Furthermore, it will be understood that the features of the first exemplary shoe may also form part of the second aspect of the invention. This is because, as shown in Fig. 2 and Fig. 4, the first exemplary shoe also comprises the first and second stabilizing elements as proposed by the second aspect of the invention.

Figure 8 shows a bottom view of a second exemplary shoe 1 according to the first and fourth aspects of the present invention. As shown, the outsole 3 is equipped with an embedded carbon sole insert 40, which may be referred to as a composite module as described above. Thus, the inner layers of the stabilizing elements 10, 15 may be connected to each other via the carbon sole insert 40, i.e. the composite module. The same applies to the outer layers. Thereby, stabilization may be further improved without applying pressure to the Achilles area, particularly the Achilles tendon insertion.

9 shows a front view of a third exemplary shoe 1 according to the fourth aspect of the present invention. As shown, a first recess 21 is embossed on the lateral side of the shoe upper 2, and a second recess 26 is embossed on the medial side of the shoe upper 2. This allows the lateral and medial sides of the foot to be equally secured against slipping off. As further shown, the second recess 26 is located higher than the first recess 21, i.e., closer to the foot opening 4. Thus, the positioning of the containment elements 20, 25 is adapted to the anatomy of the wearer's foot.

Figure 10 shows a second exemplary shoe according to the first and fourth aspects of the present invention from an inside view.

According to the first aspect of the invention, the inner layer 16 of the second stabilizing element 15 extends beyond the outer layer 17 of the second stabilizing element 15. In particular, the inner layer 16 extends backwards towards the Achilles region and upwards towards the foot opening beyond the outer layer 17. Thus, the inner layer can improve the support of the stabilizing element to the foot. Furthermore, the inner layer 16 extends forwards beyond the outer layer 17 towards the toe area. The outer layer 17 can thereby serve to push the inner layer 16 towards the interior of the shoe 1. Thus, the area of the shoe upper 2 to be stabilized can be easily modified by adapting the inner layer 16, whereas the outer layer 17 can remain unchanged.

In further accordance with the first aspect of the present invention, the shape of the inner layer 16 of the second stabilizing element 15 corresponds to the shape of the outer layer 17 of the second stabilizing element 15. In particular, the shape of the outer layer 17 is located within the inner layer, and the three edges of the inner layer and the outer layer are substantially parallel. This allows loads to be continuously transferred between the inner layer and the outer layer. Thereby, uniform stress distribution can be achieved.

According to a fourth aspect of the invention, the embossed second recess 26 of the second containment element 25 has a cross section that is at least partially annular. Compared to the substantially triangular cross section exemplarily shown in Figures 2 to 5, a less progressive spring characteristic may be obtained. The less progressive spring characteristic may provide improved comfort.

11 shows a detailed view of the second exemplary shoe 1 according to the first and fourth aspects of the present invention. As shown, the outer layer 17 of the second stabilizing element 15 has a varying thickness. In particular, a step 51 on the surface of the outer layer 17 separates the portions of the outer layer 17 having different thicknesses. The step 51 is a discontinuous change on the surface of the outer layer 17. As further shown, the outer layer 17 has a reinforcing rib 50 including the step 51. As shown in FIG. 12, the first stabilizing element 10 also has a reinforcing rib 50, as does the second stabilizing element 15.

Figure 12 shows a detailed view of a second exemplary shoe according to the first, second and fourth aspects of the present invention. The reinforcing rib 50 of the first stabilizing element 10 extends from the outsole 3 along the outer layer 12 of the stabilizing element 10. The outer layer 12 of the stabilizing element is integrally formed with the outsole or an outsole component. Furthermore, the reinforcing rib 50 extends essentially along the entire length of the stabilizing element 10. The reinforcing rib 50 further extends at least partially along the outsole 3, this aspect is also shown in Figure 10.

1 shoe 2 shoe upper 3 outsole 4 foot opening 5 heel area 6 exterior of shoe upper 7a lateral ankle area 7b medial ankle area 10 first stabilizing element 11 inner layer of first stabilizing element 12 outer layer of first stabilizing element 13 exterior area of shoe upper 14a, 14b straight edge 15 second stabilizing element 16 inner layer of second stabilizing element 17 outer layer of second stabilizing element 18 further exterior area of shoe upper 20 containment element 21 first recess 23 non-embossed surface 25 second containment element 26 second recess 30 distance 40 carbon sole insert 50 reinforcing rib 51 step 100 method for manufacturing at least one containment element in a shoe upper 110 step of providing a shoe upper 120 1. Embossing at least one recess in the shoe upper 130. At least partially filling the recess with foam 140. Providing a layer on top of the recess.
1. A method 100 for manufacturing at least one containment element 20, 25 in a shoe upper 2, the method 100 comprising:
a. Step 110 of providing a shoe upper 2;
b. embossing 120 at least one recess 21 in the shoe upper 2;
c. filling 130 the recess 21 at least partially with foam.
2. The method 100 comprises:
d. Step 140 of providing a layer over the recess 21, thereby at least partially closing the recess 21.
2. The method 100 of embodiment 1, further comprising:
3. The method 100 according to one of the above embodiments, wherein the indentation 21 is embossed 120 into the inner surface of the shoe upper 2 such that the shape of the indentation 21 preferably protrudes onto the exterior 6 of the shoe upper 2.
4. The method 100 according to one of the above embodiments, wherein the foam protrudes medially and/or laterally from the shoe upper 2 compared to a surface 23 of the shoe upper 2 adjacent the recess 21 that was not embossed.
5. The method 100 according to one of the above embodiments, wherein the indentations 21 are embossed on the lateral and/or medial side of the shoe upper 2.
6. The method 100 according to one of the previous embodiments, wherein the recess 21 has a cross section that is at least partially circular, oval, elliptical, triangular and/or rectangular.
7. The method 100 according to one of the above embodiments, wherein the recess 21 is elongated along the shoe upper 2.
8. The method 100 according to the above embodiment, wherein the recess 21 extends from the ankle region 7a, 7b of the shoe upper 2 into the midfoot region 8 of the shoe upper 2.
9. The method 100 according to embodiment 7 or 8, wherein the recess 21 comprises a length and a width, the ratio of the length to the width being preferably 5 to 18, more preferably 7 to 16, even more preferably 9 to 14, and most preferably 10 to 12.
10. The method 100 according to one of embodiments 7-9, wherein the recess 21 extends along 20%-80%, preferably 25%-75%, more preferably 30%-65%, even more preferably 40%-60%, and most preferably 45%-55% of the length of the shoe upper 2.
11. The method 100 according to embodiment 9 or 10, wherein the cross-sectional area of the recess 21 and/or the width of the recess 21 reaches a maximum value in a middle portion of the recess 21, preferably spaced from one end of the recess 21 by a factor of 0.3 to 0.7, preferably 0.35 to 0.65, more preferably 0.4 to 0.6, even more preferably 0.45 to 0.55, and most preferably 0.48 to 0.52, multiplied by the length of the recess 21.
12. The method 100 according to one of embodiments 9-11, wherein the cross-sectional area of the recess 21 and/or the width of the recess 21 reaches a minimum in the midfoot region 8 and/or in the ankle regions 7a, 7b.
13. The method 100 according to one of the above embodiments, wherein the first indentation 21 is embossed on a lateral side of the shoe upper 2 and the second indentation 26 is embossed on a medial side of the shoe upper 2.
14. A shoe upper 2 comprising at least one containment element 20, the containment element 20 being manufactured by the method 100 according to one of the embodiments 1-13.
15. A shoe 1 comprising the shoe upper 2 according to embodiment 14.
Furthermore, the present invention includes the following embodiments.
[25] A shoe (1),
Shoe upper (2);
An outsole (3);
A stabilizing element (10),
a stabilizing element (10) extending upward from the outsole (3) toward an entry opening (4) in the shoe upper (2) and rearward toward the heel region (5) of the shoe (1);
The stabilizing element (10) comprises an outer layer (12);
A stabilizing element (10) extends along the exterior (6) of the shoe upper (2);
a portion (13) of the exterior (6) of the shoe upper (2) is not covered by the stabilizing element (10), the portion (13) being located between the stabilizing element (10) and the outsole (3);
the region (13) transitions continuously into a further region (18) of the exterior (6) of the shoe upper (2) that is not covered by the stabilizing element (10), whereby the further region (18) extends into a portion of the shoe upper (2) that is configured to receive the Achilles region and/or the Achilles tendon attachment;
A shoe (1) in which the outer layer (12) of the stabilizing element (10) is integrally molded with the outsole (3) of the shoe (1).
[26] The shoe (1) according to [1], wherein a further portion (18) extends from the lateral side of the shoe (1) towards the medial side of the shoe (1).
[27] The shoe (1) according to [1] or [2], wherein the stabilizing element (10) is provided with an inner layer (11).
[28] A shoe (1),
Shoe upper (2);
An outsole (3);
A stabilizing element (10),
a stabilizing element (10) extending upward from the outsole (3) toward an entry opening (4) in the shoe upper (2) and rearward toward the heel region (5) of the shoe (1);
The stabilizing element (10) comprises an inner layer (11) and an outer layer (12),
The inner layer (11) and the outer layer (12) are made of different materials,
A shoe (1) having a stabilizing element (10) extending along an exterior (6) of a shoe upper (2).
[29] The shoe (1) according to any one of [1] to [4], wherein the outer layer (12) of the stabilizing element (10) is integrally molded with the outsole (3) of the shoe (1).
[30] The shoe (1) according to [3], wherein the inner layer (11) and the outer layer (12) are made of different materials.
[31] The shoe (1) according to [4], wherein a portion (13) of the exterior (6) of the shoe upper (2) is not covered by the stabilizing element (10), and the portion (13) is located between the stabilizing element (10) and the outsole (3).
[32] The shoe (1) according to one of [1] to [7], wherein the area (13) transitions continuously into a further area (18) on the exterior (6) of the shoe upper (2) that is not covered by the stabilizing element (10), whereby the further area (18) extends into a portion of the shoe upper (2) that is configured to receive the Achilles area and/or the Achilles tendon attachment, the further area (18) preferably extending from a lateral side of the shoe (1) to a medial side of the shoe (1).
[33] The shoe (1) according to any one of [1] to [3] and [6] to [8], wherein the portion (13) has a size of at least 100 mm2, preferably at least 150 mm2, more preferably at least 200 mm2, even more preferably at least 250 mm2, and most preferably at least 300 mm2.
[34] The shoe (1) according to one of [1] to [9], wherein the stabilizing element (10) has a wing shape, a parallelogram shape, a trapezoid shape, an elliptical shape and/or a rectangular shape.
[35] The shoe (1) according to any one of [1] to [10], wherein the shape of the stabilizing element (10) is limited by at least two straight edges (14a, 14b) extending upwards towards the foot opening (4) and backwards towards the heel region (5) along the exterior (6) of the shoe upper (2), the two straight edges (14a, 14b) preferably having a length of at least 10 mm, more preferably at least 15 mm, even more preferably at least 20 mm, and most preferably at least 25 mm.
[36] The shoe (1) according to any one of [1] to [11], wherein the outer layer (12) has a thickness of 0.01 mm to 3 mm, preferably 0.1 mm to 2 mm, more preferably 0.2 mm to 1 mm, even more preferably 0.25 mm to 0.5 mm, and most preferably 0.28 mm to 0.32 mm.
[37] The shoe (1) according to any one of [3] to [12], wherein the inner layer (11) has a thickness of 0.01 mm to 3 mm, preferably 0.1 mm to 2 mm, more preferably 0.2 mm to 1 mm, even more preferably 0.25 mm to 0.5 mm, and most preferably 0.28 mm to 0.32 mm.
[38] The shoe (1) according to any one of [3] to [13], wherein the shape of the inner layer (11) corresponds to the shape of the outer layer (12).
[39] The shoe (1) according to any one of [3] to [14], wherein the inner layer (11) extends beyond the outer layer (12).
[40] The shoe (1) according to any one of [3] to [15], wherein the inner layer (11) comprises a composite layer, the composite layer being preferably a fiber-reinforced layer.
[41] The shoe (1) according to any one of [1] to [16], wherein the composite layer includes a carbon fiber reinforced layer.
[42] The shoe (1) according to any one of [1] to [17], wherein the outer layer (12) is provided with reinforcing ribs (50), preferably extending from the outsole along the outer layer (12) of the stabilizing element (10).
[43] The shoe (1) according to any one of [1] to [18], wherein the outer layer (12) comprises a composite layer, the outer layer (12) preferably extending from a composite module of the outsole (3).
[44] The shoe (1) according to any one of [1] to [19], wherein a line on the exterior (6) of the shoe upper (2) which runs substantially straight along the Achilles region from the outsole (3) to the foot opening (4) is not covered by the inner layer (11) and/or the outer layer (12), and preferably said line is not covered by the stabilizing element (10).
[45] The shoe (1) according to any one of [1] to [20], comprising two stabilizing elements (10, 15) as defined in any one of [1] to [20], preferably the first stabilizing element (10) being arranged on a lateral side of the shoe (1) and more preferably the second stabilizing element (15) being arranged on a medial side of the shoe (1).
[46] The shoe (1) described in [21], wherein the first stabilizing element (10) and the second stabilizing element (15) are configured to anchor the calcaneus, thereby preferably not applying pressure to the Achilles area and/or the Achilles tendon attachment.
[47] The shoe (1) of [21] or [22], wherein the first stabilizing element (10) and the second stabilizing element (15) do not cover a portion of the shoe upper (2) that is configured to receive the Achilles area and/or the Achilles tendon attachment.
[48] The shoe (1) according to any one of [21] to [23], wherein the first stabilizing element (10) and the second stabilizing element (15) are spaced apart by a distance (30) extending along the exterior (6) of the shoe upper (2) and at least partially along the Achilles region.

Claims (23)

A shoe,
Shoe upper and
The outsole and
a stabilizing element;
the stabilizing element extends upwardly from the outsole toward an entry opening in the shoe upper and rearwardly toward a heel region of the shoe;
the stabilizing element comprises an outer layer;
the stabilizing element extends along an exterior of the shoe upper;
a portion of the exterior of the shoe upper is not covered by the stabilizing element, the portion being located between the stabilizing element and the outsole;
said portion transitioning continuously into a further portion of the exterior of the shoe upper that is not covered by said stabilizing element, whereby said further portion extends into an Achilles portion and a portion of the shoe upper that is configured to receive an Achilles tendon attachment, and a posterior-most point of said stabilizing element extends towards said portion of the shoe upper that is configured to receive the Achilles tendon attachment;
The shoe, wherein the outer layer of the stabilization element is integrally molded with the outsole of the shoe. The shoe of claim 1, wherein the further portion extends from the lateral side of the shoe to the medial side of the shoe. The shoe of claim 1 , wherein the stabilizing element comprises an inner layer , the inner layer having a higher stiffness and/or a higher strength than the outer layer . A shoe,
Shoe upper and
The outsole and
a stabilizing element;
the stabilizing element extends upwardly from the outsole toward an entry opening in the shoe upper and rearwardly toward a heel region of the shoe;
the stabilizing element comprises an inner layer and an outer layer;
the inner layer and the outer layer are made of different materials;
the stabilizing element extends along an exterior of the shoe upper;
a portion of the exterior of the shoe upper is not covered by the stabilizing element, the portion being located between the stabilizing element and the outsole;
The portion transitions continuously into a further portion of the exterior of the shoe upper that is not covered by the stabilizing element, whereby the further portion extends into a portion of the shoe upper that is configured to receive an Achilles portion and an Achilles tendon attachment, and a posterior-most point of the stabilizing element extends toward the portion of the shoe upper that is configured to receive the Achilles tendon attachment. The shoe of claim 4 , wherein the inner layer has a higher stiffness and/or a higher strength than the outer layer. The shoe of claim 4, wherein the outer layer of the stabilizing element is integrally molded with the outsole of the shoe. The shoe of claim 3, wherein the inner layer and the outer layer are made of different materials. The shoe of claim 1 , wherein the area has a size of at least 100 mm ² . The shoe of claim 1, wherein the stabilizing element has a wing shape, a parallelogram shape, a trapezoid shape, an elliptical shape, and/or a rectangular shape. 2. The shoe of claim 1, wherein the shape of the stabilizing element is limited by at least two straight edges that extend along the exterior of the shoe upper upward toward the foot opening and rearward toward the heel region. The shoe according to claim 1, wherein the outer layer has a thickness of 0.01 mm to 3 mm. The shoe according to claim 3, wherein the inner layer has a thickness of 0.01 mm to 3 mm. The shoe of claim 3, wherein the shape of the inner layer corresponds to the shape of the outer layer. The shoe of claim 3, wherein the inner layer extends beyond the outer layer. The shoe of claim 3, wherein the inner layer comprises a composite layer. The shoe of claim 15 , wherein the composite layer comprises a carbon fiber reinforced layer. The shoe of claim 1, wherein the outer layer has reinforcing ribs. The shoe of claim 1, wherein the outer layer comprises a composite layer. The shoe according to claim 4, wherein the line on the exterior of the shoe upper that extends substantially straight along the Achilles region from the outsole to the foot opening is not covered by the inner layer and/or the outer layer. The shoe of claim 1, wherein the shoe comprises two stabilizing elements, a first stabilizing element disposed on a lateral side of the shoe and a second stabilizing element disposed on a medial side of the shoe. The shoe of claim 20 , wherein the first stabilizing element and the second stabilizing element are configured to anchor a calcaneus. 21. The shoe of claim 20 , wherein the first stabilizing element and the second stabilizing element do not cover the portion of the shoe upper configured to receive the Achilles region and the Achilles tendon insertion. 21. The shoe of claim 20, wherein the first stabilizing element and the second stabilizing element are spaced apart a distance that extends along the exterior of the shoe upper and at least partially along the Achilles region.

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