A sole structure for an article of footwear having an upper includes an outsole, a plate disposed between the outsole and the upper, and a first cushioning layer. The plate includes an anterior-most point disposed in a forefoot region of the sole structure, a posterior-most point disposed closer to a heel region of the sole structure than the anterior-most point, and a concave portion extending between the anterior-most point and the posterior-most point. The concave portion includes a constant radius of curvature from the anterior-most point to a metatarsophalangeal (MTP) point of the sole structure. The MTP point opposes the MTP joint of a foot during use. The first cushioning layer is disposed between the concave portion and the upper.

A plate for an article of footwear includes a substrate, a first strand portion attached to the substrate via first stitching, and a second strand portion disposed on the first layer. The first strand portion includes first segments that each extend between two different locations along the substrate to form a first layer on the substrate. The second strand portion includes second segments that each extend between two different locations along the substrate to form a second layer on the first layer.

A sole structure for an article of footwear having an upper includes an outsole, a plate disposed between the outsole and the upper, and a first cushioning layer. The plate includes an anterior-most point disposed in a forefoot region of the sole structure, a posterior-most point disposed closer to a heel region of the sole structure than the anterior-most point, and a concave portion extending between the anterior-most point and the posterior-most point. The concave portion includes a constant radius of curvature from the anterior-most point to a metarsophalangeal (MTP) point of the sole structure. The MTP point opposes the MTP joint of a foot during use. The first cushioning layer is disposed between the concave portion and the upper.

A sole structure may include chambers and a transfer channel containing an electrorheological fluid. Electrodes may be positioned to create, in response to a voltage across the electrodes, an electrical field in at least a portion of the electrorheological fluid in the transfer channel. The sole structure may further include a controller including a processor and memory. At least one of the processor and memory may store instructions executable by the processor to perform operations that include maintaining the voltage across the electrodes at one or more flow-inhibiting levels at which flow of the electrorheological fluid the through the transfer channel is blocked, and that further include maintaining the voltage across the electrodes at one or more flow-enabling levels permitting flow of the electrorheological fluid through the transfer channel.

A plate for an article of footwear having a sole structure includes an anterior-most point disposed in a forefoot region of the sole structure, a posterior-most point disposed closer to a heel region of the sole structure than the anterior-most point, and a concave portion extending between the anterior-most point and the posterior-most point. The concave portion includes a constant radius of curvature from the anterior-most point to a metarsophalangeal (MTP) point of the sole structure. The MTP point opposes the MTP joint of a foot during use.

A footwear component that includes a sole including a recessed area and a support member positioned in the recessed area. The support member includes a main support, a front support that extends at least partially over a front end of the main support, and a rear support that extends at least partially below a rear end of the main support. The front support of the support member moves toward the main support when pressure is applied to the front support and moves away from the main support when pressure is released from the front support. Similarly, the rear support of the support member moves toward the main support when pressure is applied to the rear support and moves away from the main support when pressure is released from the rear support.

An article of footwear including an upper and a sole secured to the upper, where the sole includes an upper surface. A support member is positioned on the sole, and includes at least one portion positioned a designated distance above the upper surface of the sole to form a space between the support member and the sole, where the portion of the support member moves through the space and toward the upper surface of the sole when pressure is applied to the portion of the support member, and flexes away from the upper surface when pressure is decreased or released from the portion of the support member.

A method of forming a plate for an article of footwear is disclosed. The method includes applying a first strand portion to a base layer including positioning adjacent segments of the first strand portion to form a first layer on the base layer. The adjacent segments of the first strand portion having a greater density across a width of the plate between a medial side and a lateral side at a midfoot region of the plate than at a forefoot region of the plate and at a heel region of the plate. The method also includes applying at least one of heat and pressure to the first strand portion and to the base layer to conform the first strand portion and the base layer to a predetermined shape.

An orthopedic walking boot for a user includes an outer sole having a substantially continuously curved lateral profile bottom walking surface, wherein a radius of curvature of the lateral walking surface varies between 10 mm and infinity, and an upper portion arranged with the outer sole to support a lower portion of the user's leg.

A midsole may include an electrorheological (ER) fluid housing. The ER fluid housing may be located between top bottom surfaces of the midsole in at least a forefoot region of the midsole. The midsole may include a plate located over the ER fluid housing.