A plurality of orthotic systems are provided. One bi-layer system is constructed from a single sheet of fabric that is molded into two layers. One tri-layer system includes a base layer; a mid-layer; and an upper layer. The upper layer is joined to the mid-layer and the mid-layer is joined to the base layer. The coupling of the base layer, the mid-layer and the upper layer create a rear spring section, a mid-spring section and a front spring section in which the upper layer is suspended over the mid-layer and the heel portion is suspended on the proximal heel end of the base layer.

An article of footwear may include an upper and a sole structure fixedly attached to a bottom portion of the upper. The sole structure may include a sole component including a baseplate having a bottom surface and at least a first ground engaging member extending substantially downward from the bottom surface of the baseplate, the first ground engaging member having a substantially circular cross-sectional shape. In addition, the sole structure may also include a tapered support structure having a substantially pyramidal shape and extending substantially downward from the bottom surface of the baseplate, abutting the first ground engaging member at a side portion, and partially surrounding the first ground engaging member such that a portion of the first ground engaging member is exposed between edges of the tapered support structure. Also, the tapered support structure may extend downward from the baseplate less than the first ground engaging member.

An exercise apparatus includes a pair of step-up apparatuses wearable on feet of a user. Each step-up apparatus is configurable between an expanded configuration and a compressed configuration to simulate a selected motion when the user wearing the pair of step-up apparatuses travels by foot. One of the step-up apparatuses moves towards the expanded configuration while the other step-up apparatus moves towards the compressed configuration.

A sole includes an upper sole portion having a heel region and a toe region, and a pod assembly disposed below the upper sole portion. The pod assembly includes at least five pods fluidly connected in a substantially linear arrangement extending from the heel region to the toe region. The pods are fluidly connected in series.

An article of footwear is provided, which may include an upper and a sole structure. The upper may include an elastic skin material forming at least a portion of an external surface of the upper. In addition, the upper may include substantially inelastic reinforcing material selectively located adjacent portions of the elastic skin material, wherein the elastic skin material is more elastic than the substantially inelastic reinforcing material.

An article of footwear comprising: an upper having an outer surface, a foot insertion volume and a sole facing surface; and a sole assembly comprising: a midsole having a foot facing surface, a ground facing surface, a heel region, forefoot region and an arch region between the heel region and the forefoot region in a longitudinal direction, a medial reinforcement member positioned at a medial side of the midsole and/or a lateral reinforcement member positioned at a lateral side of the midsole, where the medial and/or the lateral reinforcement member is/are configured to increase the rigidity of the midsole in a longitudinal direction in the arch region.

A sole for an article of footwear includes a base having an outer edge defining a perimeter, the base having a forefoot portion, a midfoot portion and a heel portion; and a plurality of resilient projections extending from the base, wherein the plurality of projections includes a plurality of projections extending non-orthogonally from the base about the perimeter of the base and a plurality of projections extending substantially orthogonally from the base within the non-orthogonal projections.

Baseplates for shoes, wherein the baseplate is removably insertable into a shoe upper, and wherein the baseplate includes a substantially planar body, which is configured to provide stability to the shoe upper, and a plurality of tread elements, which are configured to protrude through a respective opening of a plurality of openings in a bottom portion of the shoe upper when the baseplate is removably inserted into the shoe upper, wherein the plurality of tread elements are unitarily formed with the body.

Soles for footwear and footwear are disclosed. The sole may include a midsole having a first surface. The sole may additionally include an outsole having a second surface and a plurality of first recesses. The second surface may be attached to the first surface. The first surface and the plurality of first recesses may define a plurality of chambers. One or more chambers of the plurality of chambers may include trapped air. The midsole may further include first protruding portions that extend downwardly from the first surface toward one or more first recesses of the plurality of first recesses.

Sole structures for articles of footwear, including athletic footwear, include: (a) a lightweight foam midsole component for supporting the foot; and (b) a plurality of heavier and/or denser cage components covering selected areas of the midsole component. Spaces are provided between the cage components. These spaces may be sized, shaped, and oriented to define and/or correspond to flexion lines of the foot and/or to produce a more natural flex motion to the sole. The soles additionally may include one or more outsole components, e.g., on bottom surface(s) of the cage component(s) and/or the foam midsole. These sole structures may be engaged with an upper to form a shoe. The uppers may include one or more lace receiving openings supported by elongated wire or textile components. Methods of making footwear including such uppers and/or sole structures also are described.