Sole structures, fluid transfer systems, foot support systems, articles of footwear, and/or other foot-receiving devices include one or more pumps (e.g., foot activated pumps) that facilitate movement of fluid within the sole structure/article of footwear, e.g., to change and/or control pressure (e.g., foot support pressure) in one or more fluid filled bladders included in the overall system.

A sole arrangement for an article of footwear with a gradient depth value is provided. In one aspect of the disclosure, the sole arrangement extending from an end of a posterior area of the sole arrangement to an end of an anterior area of the sole arrangement, wherein the posterior area of the sole arrangement being formed under a heel area and the anterior area of the sole arrangement being formed under a forefoot area of a foot. The sole arrangement having an upper facing surface and a ground engaging surface, wherein the upper facing surface being on an opposite side of the sole arrangement than the ground engaging surface. The sole arrangement having a maximum posterior depth value. The sole arrangement having a maximum anterior depth value. The maximum posterior depth value may be smaller than the maximum anterior depth value by a first margin.

Devices with internal flexibility sipes, such as slits, provide improved flexibility, improved cushioning to absorb shock and/or shear forces, and improved stability of support. Siped devices can be used in any existing product that provides or utilizes cushioning and stability. These products include human and other footwear, both soles and uppers, as well as orthotics; athletic, occupational and medical equipment and apparel; padding or cushioning, such as for equipment or tool handles, as well as furniture; balls; tires; and any other structural or support elements in a mechanical, architectural, or any other product.

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 assembly for an article of footwear comprises a midsole, a sole having a heel region, and a first wave spring disposed within a vacuity located within the heel region. The wave spring includes a top surface and a bottom surface. A plate, resting upon the top surface of the wave spring, is unsecured to the midsole and sized to permit movement within the vacuity along with the wave spring responsive to a rolling foot strike.

Sole structures, fluid transfer systems, foot support systems, articles of footwear, and/or other foot-receiving devices include one or more pumps (e.g., foot activated pumps) that facilitate movement of fluid within the sole structure/article of footwear, e.g., to change and/or control pressure (e.g., foot support pressure) in one or more fluid filled bladders included in the overall system.

An article of footwear and method of making an article of footwear are disclosed. The article includes an outsole having an outsole member. The outsole member includes a first piece and a second piece. The first piece is spaced from a base by a first vertical distance. The second piece is spaced from the base by a second vertical distance, the first vertical distance being greater than the second vertical distance.

An article of footwear is provided and includes an upper having a width and a footbed. A sole is attached to the upper and includes a heel portion, a lateral side and a medial side. The sole includes an upper surface and a lower surface, where the upper surface extends across the width of the upper, and where the footbed is on the upper surface of the sole. The sole forms a shell having a sidewall that extends from the lateral side around the heel portion to the medial side, where the sidewall extends along the upper to a point above a top surface of the footbed.

A sole structure for an article of footwear includes a unitary sole with a first cushioning body having a first hardness and a second cushioning having a second hardness greater than the first hardness. Both the first and the second cushioning bodies are exposed at a periphery of the sole. The second cushioning body may have a wedge surface that interfaces with a lateral extremity of the first cushioning body and angles laterally outward toward a lateral side exterior surface of the sole from a lower extent to an upper extent of the wedge surface. The second cushioning body may underlie the first cushioning body in a portion of a forefoot region of the sole such that the first cushioning body establishes a foot-facing exterior surface and the second cushioning body establishes a ground-facing exterior surface of the sole where the first cushioning body overlies the second cushioning body.

An article of footwear has an upper, an outsole attached to the upper, and a midsole. The outsole includes a ground-engaging surface and an inner surface disposed on opposite sides. The midsole has a footbed and a bottom surface disposed on opposite sides. The bottom surface opposes the inner surface to define a cavity therebetween. The article of footwear also includes a first series of projections extending into the cavity from one of the inner surface and the bottom surface in a first direction toward the other of the inner surface and the bottom surface. The article of footwear also includes a second series of projection extending into the cavity from one of the inner surface and the bottom surface in the first direction toward the other of the inner surface and the bottom surface. The article of footwear also includes a quantity of particulate matter disposed within the cavity.