Articles of footwear in accordance with some aspects of this technology include a foot support component and/or heel counter structure that includes openings, voids, and/or grooves around the heel area. These openings, voids, or grooves may make the heel counter structure more conformable, lightweight, and/or flexible. The openings, voids, or grooves may allow the heel or heel counter structure to conform better to the heel/foot of a user, providing and an adaptive response, adapting differently to different heels. The openings, voids, or grooves may be customized within the heel counter component based on the shape of the foot and/or heel of the user. Additionally or alternatively, these openings, voids, or grooves may make the heel construction better to conform to the wearer's heel and better to contain and move with the wearer's heel, e.g., during use and to improve flexion, comfort, and fit.

Articles of footwear in accordance with some aspects of this technology include a foot support component and/or heel counter structure that includes openings, voids, and/or grooves around the heel area. These openings, voids, or grooves may make the heel counter structure more conformable, lightweight, and/or flexible. The openings, voids, or grooves may allow the heel or heel counter structure to conform better to the heel/foot of a user, providing and an adaptive response, adapting differently to different heels. The openings, voids, or grooves may be customized within the heel counter component based on the shape of the foot and/or heel of the user. Additionally or alternatively, these openings, voids, or grooves may make the heel construction better to conform to the wearer's heel and better to contain and move with the wearer's heel, e.g., during use and to improve flexion, comfort, and fit.

A modular article of footwear has a shock absorbing insert placed between the insole and the outsole thereof, for example at the heel. The insert includes a spring carrier having upper and lower portions, each having a plurality seats for receiving a respective ends of respective coil springs. Each of the springs extends between said upper and lower portions and is captured therebetween. A pair of opposed permanent magnets generates a separating force which supplements the supporting force of the mechanical springs. The insert may also contain a device for converting mechanical energy to electrical energy.

A footwear sole apparatus which has a base member and at least one insert (principal insert and/or heel insert) as well as one or more fail-safe interconnectivity mechanisms, comprised of a configuration to fit or replace the sole or partial sole of a pair or pairs of footwear. The base member is either pre-attached to a new shoe(s) or fitted onto the sole of an existing shoe(s). The base member can be attached to the insert(s), having one or more fail-safe mechanisms to enhance interconnectivity of the base member and insert(s).

A footwear sole apparatus which has a base member and at least one insert (principal insert and/or heel insert) as well as one or more fail-safe interconnectivity mechanisms, comprised of a configuration to fit or replace the sole or partial sole of a pair or pairs of footwear. The base member is either pre-attached to a new shoe(s) or fitted onto the sole of an existing shoe(s). The base member can be attached to the insert(s), having one or more fail-safe mechanisms to enhance interconnectivity of the base member and insert(s).

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.

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.

A sole structure includes an outsole having an outsole body defining an inner body surface and an outer body surface opposite the inner body surface. The outsole has a plurality of traction elements each extending from the outsole body away from the inner body surface. Each of the traction elements includes a base coupled to the outsole body surface. Each of the traction elements includes a tip spaced apart from the outer body surface and has a pitch defined by a vector. The pitch of each of the plurality of traction elements varies as a function of a distance from the central axis to a respective traction element.

A sole structure includes an outsole having an outsole body defining an inner body surface and an outer body surface opposite the inner body surface. The outsole has a plurality of traction elements each extending from the outsole body away from the inner body surface. Each of the traction elements includes a base coupled to the outsole body surface. Each of the traction elements includes a tip spaced apart from the outer body surface and has a pitch defined by a vector. The pitch of each of the plurality of traction elements varies as a function of a distance from the central axis to a respective traction element.

A sole structure for an article of footwear includes an interior cushioning arrangement extending from an anterior end to a posterior end. The sole structure also includes a forefoot cushioning element extending from the anterior end to a first end and including a first material having a first durometer. The sole structure further includes a heel cushioning element extending from the posterior end to a second end and including a second material having a second durometer. The first end of the forefoot cushioning element and the second end of the heel cushioning element overlap one another.