A pneumatic insole includes airbags, channels, two arch-related chambers, a push-type inlet valve, an inlet channel, a check valve, a recessed portion, a push-type adjustment valve, and an outlet channel. The channels interconnect the airbags. The push-type inlet valve is located in the first arch-related chamber. The inlet channel connects the first arch-related chamber to a leading one of the airbags. The check valve is arranged between the inlet channel and the inlet airbag. The recessed portion is located between the arch-related chambers. The push-type adjustment valve is located in the recessed portion and formed with an upper face that extends lower than that of the first and second arch-related chambers. The outlet channel connects the push-type adjustment valve to another one of the airbags.

A shock absorption shoe, having a sole and at least one shock absorption module each having an outer shell, an inner core, an air cushion cylinder and a bottom cover, and each being connected to an air tube. The inner core is sleeved into a cavity of the outer shell from the top. A position limiting structure is provided between the inner core and the cavity. The air cushion cylinder is sleeved within the cavity. The bottom cover covers the bottom of the cavity. The shoe has a bottom layer, a middle layer and a top layer; the middle layer contains at least one mounting hole for mounting the at least one shock absorption module. The air tube is in an air tube groove on the middle layer, and one end of which is connected to the air cushion cylinder while another end is connected with a nozzle.

A sole structure for an article of footwear having an upper includes a heel region, a forefoot region, and a mid-foot region disposed between the heel region and the forefoot region. The sole structure also includes a bladder including a first barrier layer cooperating with a second barrier layer to define a first chamber bounding a periphery of the heel region, and a second chamber extending from the mid-foot region through the forefoot region and including a plurality of segments extending from a medial side of the sole structure to a lateral side of the sole structure. Each of the segments of the second chamber includes a medial reservoir adjacent to the medial side and a lateral reservoir adjacent to the lateral side, the medial reservoir fluidly coupled to the lateral reservoir via a first conduit.

A bladder for an article of footwear includes a chamber having (i) an arcuate segment extending from a first transition to a second transition, (ii) a first plurality of elongate segments extending in a first direction from the first transition to a first terminal end, and (iii) a second plurality of elongate segments spaced apart from the first plurality of elongate segments and extending in the first direction from the second transition to a second terminal end. The bladder also includes a web area connecting the arcuate segment, the first plurality of elongate segments, and the second plurality of elongate segments and extending to a terminal edge spaced apart from each of the first terminal end and the second terminal end.

A sole structure for an article of footwear comprises a midsole system with a plurality of cushioning units, each having multiple cushioning layers configured to work together as a system to absorb a compressive load, such as a dynamic compressive load due to impact with the ground, in stages of progressive cushioning according to the relative stiffness values of the layers. Various midsole systems disclosed include isolated cushioning units, linked cushioning units, sole layers having stanchions interfacing with the midsole system, midsole systems with sole layers having keyed and unkeyed portions overlying a bladder, and midsole systems with vertically-stacked cushioning units disposed in inverted relationship to one another.

A sole structure for an article of footwear comprises a midsole having four stacked polymeric sheets bonded to one another to define a first cushioning layer, a second cushioning layer, and a third cushioning layer. Each cushioning layer comprises a sealed chamber retaining gas in isolation from each other sealed chamber. Bonds between adjacent ones of the sheets are arranged such that the third cushioning layer is stacked directly above the first cushioning layer with the second cushioning layer bordering both the first cushioning layer and the third cushioning layer, and the sealed chamber of the second cushioning layer includes a plurality of elongated segments each extending lengthwise across a longitudinal midline of the midsole at a respective acute angle to the longitudinal midline.

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.

There is also provided a self-sustainable body-cooling garment for cooling a body portion of a human or an animal adapted to use the air pumping footwear and a cooling system for cooling the human or animal's body. There is provided a footwear comprising an air pump adapted to pump air when worn by a human or an animal during a pedestrian movement and to store or direct the pumped air for use by a cooling system for cooling the pumped air and using the cooled air for cooling the human or the animal. There is also provided a cooling system comprising an air pump adapted to be embedded within a footwear and a nozzle adapted to cool air pumped using the footwear when worn by a human or animal during a pedestrian movement.

An article comprises a chamber that includes a barrier formed from a polymer material. The barrier has a first portion that forms a first surface of the chamber, and a second portion that forms an opposite second surface of the chamber. The barrier forms at least one interior cavity between the first portion and the second portion. The at least one interior cavity is filled with fluid retained by the barrier.

A process of making a family cell of homogenous inner bladders with varying elasticity includes a forming a plurality of inner bladders from a first material with a first elasticity. The inner bladders have interior surfaces during inner chambers and exterior surfaces exposed to an outside environment. The inner chambers are configured to store a fluid. A family cell is formed by fluidly connecting the inner bladders. One or more hybrid bladders are selected from the inner bladders and a second material having a second elasticity is applied to the hybrid bladders. The second elasticity is less than the first elasticity, such that the second material reduces the elastic qualities of the hybrid bladder.