A sole structure for an article of footwear includes an outer sole element, an inner sole element, and a membrane. The outer sole element has a first top surface and a recess formed in the first top surface. The recess is defined by an inner peripheral surface extending from the first top surface. The inner sole element is disposed within the recess and has a second top surface and an outer peripheral surface extending from the second top surface. The outer peripheral surface is spaced apart from and opposing the inner peripheral surface of the outer sole element to form a channel between the inner sole element and the outer sole element. The membrane is joined to the first top surface of the outer sole element to sealingly enclose the channel and define a chamber.

An article of footwear including a sole including a lateral support member, a medial support member and a front support member that are independent from each other and form a triangular contact region on a bottom surface of the sole.

A sole structure for an article of footwear includes a forefoot region disposed adjacent an anterior end, a heel region disposed adjacent a posterior end, and a mid-foot region disposed intermediate the forefoot region and the heel region. The sole structure further includes fluid-filled bladder having a first segment extending along a medial side in the heel region, a second segment extending along a lateral side in the heel region, and a web area disposed between the first segment and the second segment. Additionally, the sole structure includes an outer sole member having an upper portion extending from a first end in the forefoot region to a second end in the heel region. The second end of the outer sole member is received on a first side of the web area. The outer sole member also includes a rib extending downwardly from the upper portion and defining a cavity.

A sole structure for an article of footwear includes a cushioning element having a top surface, a bottom surface formed on an opposite side of the cushioning element from the top surface, a ramp surface spaced apart from the bottom surface in a heel region of the cushioning element, a heel pocket extending through the cushioning element from the top surface to the ramp surface, and a plurality of pillars extending from the ramp surface and surrounding the pocket. The sole structure additionally includes a plurality of cushioning particles disposed within the pocket, an outsole attached to the cushioning element and enclosing a first end of the pocket, and an upper barrier layer attached to the top surface of the cushioning element and covering a second end of the pocket.

A shoe includes a shoe upper that holds a wearer's foot when worn. A shoe sole is connected to the shoe upper and has a collapsible section including a body that at least partially defines a pocket in the collapsible section. An insert is installed in the pocket. The insert has a vertical thickness that expands the collapsible section and increases the vertical thickness of the shoe sole compared to when no insert is installed in the pocket. The shoe may be used for limb length correction.

A method of forming a polymeric foam material is provided and includes providing a precursor material having a first thickness, the precursor material being an open-cell foam material and applying a uniaxial compressive force to the precursor material to compress the precursor material to a second thickness, the compressive force causing a cell structure of the precursor material to collapse. The method also includes heating the precursor material at a molding temperature for a first time period while the compressive force is applied, the first time period being sufficient to heat the precursor material to a softening temperature, removing the compressive force from the precursor material, and maintaining the cell structure of the precursor material in a collapsed state.

Midsoles, and articles of footwear having such midsoles, with a distal surface profile based, in whole or in part, on a pressure map of pressures exerted on the bottom of a human foot when in contact with the ground are provided. The pressure map may be a measurement of the pressures exerted on the bottom of a human foot during, for example, standing, walking, or running (e.g., a natural gait). The distal surface profile of a midsole and an article of footwear may be defined, at least in part, by a plurality of cushioning projections extending from the midsole and having predetermined height profiles based on a pressure map. Methods of making midsoles and articles of footwear including a distal surface profile based, in whole or in part, on a pressure map are also provided.

An article of footwear having a sole structure and an upper, the sole structure including a first cushioning member positioned in a heel region of the sole structure and a second cushioning member positioned in a forefoot region of the sole structure. A gap extends between the first cushioning member and the second cushioning member in a midfoot region of the sole structure, and one or both of the first cushioning member or the second cushioning member are a supercritical foam with pockets of nitrogen gas therein.

A footwear construction includes a sole assembly including a first midsole platform, a second midsole platform below the first midsole platform, a spring plate disposed between the first and second midsole platforms, and an outsole layer disposed below and joined directly with at least one of the plate, the first and the second midsole platforms. The outsole layer can be substantially the only layer below the plate in the forefoot region of the footwear so an underfoot force engaging the outsole layer is transmitted directly to the plate, which also can have an upward curving, multi-radii transition portion extending from a lowermost portion to a forward most portion of the plate so as to roll a wearer's foot forward into a next stride in a gait cycle of the wearer. The plate can define an aperture. A mounting cap can extend through the aperture and can receive a traction spike.

Described herein is a shock absorbing apparatus configured for use in a sole or insole for footwear. The device is generally provided in a raised structure equipped with air flow holes, a gripped bottom, and a smooth top.