Abstract: Bladder systems for footwear uppers, footwear components (e.g., uppers), and articles of footwear including the bladder systems, and/or methods of making and using such bladder systems are described. The bladder systems may include two or more bladder pods engaged together by one or more elastic connectors. The elastic connector(s) may enable the bladder system to fit snugly around the wearer's ankle and/or heel area while still allowing some relative movement between the bladder pods, e.g., as a wearer moves in an article of footwear. In this manner, the bladder systems provide support and a snug fit and return to its/their original size, shape, and/or location once the force from the wearer's movement is removed or sufficiently relaxed. Additionally or alternatively, the bladder systems may provide impact force attenuation properties, e.g., to protect the wearer's ankle and/or heel.

Abstract: A warp knit element for an article of footwear includes a plurality of cell structures that extend from a sole structure to a lacing region of an upper.

Abstract: A sole structure for an article of footwear includes a chassis having a first side defining a footbed and a second side disposed on an opposite side from the first side, a first bladder attached to the second side of the chassis and including at least one first chamber defining a first polar axis oriented in a first direction, and a second bladder attached to second side of the chassis and including at least one second chamber defining a second polar axis oriented in a second direction transverse to the first direction.

Abstract: A method for forming a bladder comprises providing a mold including a chamber wall having a first height and a cavity wall having a second height. The cavity wall is surrounded by the chamber wall and defines a plurality of cavities. A first sheet, a second sheet, and a gasket are provided to the mold, whereby the gasket is disposed adjacent to at least one of the first sheet and the second sheet. The mold is moved such that a peripheral portion of the at least one of the first sheet and the second sheet and the gasket are compressed by the chamber wall. A first pressure is provided between the first sheet and the second sheet through the gasket to form a plurality of chambers, and the mold is moved to a second position to seal the first pressure between the first sheet and the second sheet.

Abstract: An article of footwear includes an upper, an outsole, and a midsole disposed between the upper and the outsole. The outsole is attached to the upper and has a ground-engaging surface. The midsole has a series of walls that define a series of channels extending substantially perpendicular to a longitudinal axis of the midsole and along an entire length of the midsole. The series of channels are isolated from one another and each channel receives a quantity of particulate matter therein.

Abstract: An article of footwear may include an upper forming a void within the footwear, a sole structure secured to the upper, and a chamber that encloses a pressurized fluid. The sole structure includes a depression. The chamber is located within the void of the upper and located on the depression of the sole structure. The chamber may include a plurality of fluid-filled subchambers, a manifold, and a connection fluidically-connected at least one of the subchambers to the manifold. The subchambers may enclose the pressurized fluid at different pressures. The subchambers may be separated from one another by a bonded area in the direction extending between the heel and toe of the chamber.

Abstract: An article of footwear has an upper and a sole structure secured to the upper. The sole structure includes a chamber that encloses a pressurized fluid. The chamber includes subchambers laterally extending in a medial to lateral direction of the bladder. A bottom surface of the chamber may include at least one bond that laterally extends across the bottom surface of the chamber from one side edge to another side edge of the chamber in the medial to lateral direction. The bond may cooperate with an indentation in the bottom surface that separates one subchamber from an adjacent subchamber. A diameter of the subchambers may decrease in a direction from a heel region of the bladder to a forefoot region of the chamber.

Abstract: An article of footwear includes an upper, a midsole attached to the upper, and an outsole. The midsole has a footbed and a bottom surface disposed on an opposite side of the midsole than the footbed. The outsole has a ground-engaging surface, an inner surface disposed on an opposite side of the outsole than the ground-engaging surface, and a wall extending from the ground-engaging surface and surrounding the outsole. The article of footwear also includes a casing containing particulate matter and having a length that is greater than a length of the outsole. The casing includes a first fold at a predetermined location along its length. The casing is received within a cavity bounded by the wall of the outsole and between the bottom surface and the inner surface.

Abstract: An article of footwear includes an upper, an outsole, and a midsole disposed between the upper and the outsole. The outsole is attached to the upper and has a ground-engaging surface. The midsole has a series of walls that define a series of channels extending substantially perpendicular to a longitudinal axis of the midsole and along an entire length of the midsole. The series of channels are isolated from one another and each channel receives a quantity of particulate matter therein.

Abstract: An article of footwear has an upper and a sole structure secured to the upper. The sole structure includes a chamber that encloses a pressurized fluid. The chamber includes subchambers laterally extending in a medial to lateral direction of the bladder. A bottom surface of the chamber may include at least one bond that laterally extends across the bottom surface of the chamber from one side edge to another side edge of the chamber in the medial to lateral direction. The bond may cooperate with an indentation in the bottom surface that separates one subchamber from an adjacent subchamber. A diameter of the subchambers may decrease in a direction from a heel region of the bladder to a forefoot region of the chamber.

Abstract: A warp knit element for an article of footwear includes a plurality of cell structures that extend from a sole structure to a lacing region of an upper.

Abstract: A warp knit element for an article of footwear includes a plurality of strap members that are separated by a slit. The strap members are formed of unitary knit construction to be joined at a junction. Edges that define the strap member extend generally in a warp direction on the knit element. The knit element can provide stretch resistance to the article of footwear.

Abstract: An expandable support member for an article of footwear includes a plurality of expansion components that are joined together. The support member can be expandable between a contracted position and an expanded position. The plurality of expansion components are configured to expand along a non-linear path when the support member moves between the contracted position and the expanded position.

Abstract: A method for forming a bladder comprises providing a mold including a chamber wall having a first height and a cavity wall having a second height. The cavity wall is surrounded by the chamber wall and defines a plurality of cavities. A first sheet, a second sheet, and a gasket are provided to the mold, whereby the gasket is disposed adjacent to at least one of the first sheet and the second sheet. The mold is moved such that a peripheral portion of the at least one of the first sheet and the second sheet and the gasket are compressed by the chamber wall. A first pressure is provided between the first sheet and the second sheet through the gasket to form a plurality of chambers, and the mold is moved to a second position to seal the first pressure between the first sheet and the second sheet.

Abstract: A sole structure for an article of footwear includes a midsole having a first side with a first surface and a second side with a second surface. The first side has recesses extending toward the second side without extending to the second surface. A thickness of the midsole between the second side and a deepest extent of each of the recesses may be substantially uniform. Spacing of the recesses may correspond to a foot pressure map. The midsole may be a foam material that has a first density in a first portion along the first surface and a second density less than the first density in a second portion adjacent the first portion. A method of forming the midsole includes providing such recesses in the midsole such as by molding the midsole, and controlling a temperature of mold tools to achieve the first density in the first portion.

Abstract: An article of footwear may include an upper forming a void within the footwear, a sole structure secured to the upper, and a chamber that encloses a pressurized fluid. The sole structure includes a depression. The chamber is located within the void of the upper and located on the depression of the sole structure. The chamber may include a plurality of fluid-filled subchambers, a manifold, and a connection fluidically-connected at least one of the subchambers to the manifold. The subchambers may enclose the pressurized fluid at different pressures. The subchambers may be separated from one another by a bonded area in the direction extending between the heel and toe of the chamber.

Abstract: A method of making a cushioning member is provided. The method includes forming a first barrier member from a first material, the first barrier member including a first compartment and a second compartment. The method further includes forming a second barrier member from a second material different than the first material. The first compartment is provided with a first quantity of particulate matter and the second compartment is provided with a second quantity of particulate matter. The method further includes covering the first compartment with the second barrier member and covering the second compartment with the second barrier member.

Abstract: An article of footwear may include an upper forming a void within the footwear, a sole structure secured to the upper, and a chamber that encloses a pressurized fluid. The sole structure includes a depression. The chamber is located within the void of the upper and located on the depression of the sole structure. The chamber may include a plurality of fluid-filled subchambers, a manifold, and a connection fluidically-connected at least one of the subchambers to the manifold. The subchambers may enclose the pressurized fluid at different pressures. The subchambers may be separated from one another by a bonded area in the direction extending between the heel and toe of the chamber.

Abstract: An article of footwear includes an upper, a midsole attached to the upper, and an outsole. The midsole has a footbed and a bottom surface disposed on an opposite side of the midsole than the footbed. The outsole has a ground-engaging surface, an inner surface disposed on an opposite side of the outsole than the ground-engaging surface, and a wall extending from the ground-engaging surface and surrounding the outsole. The article of footwear also includes a casing containing particulate matter and having a length that is greater than a length of the outsole. The casing includes a first fold at a predetermined location along its length. The casing is received within a cavity bounded by the wall of the outsole and between the bottom surface and the inner surface.

Abstract: An article of footwear includes an upper, an outsole, and a midsole disposed between the upper and the outsole. The outsole is attached to the upper and has a ground-engaging surface. The midsole has a series of walls that define a series of channels extending substantially perpendicular to a longitudinal axis of the midsole and along an entire length of the midsole. The series of channels are isolated from one another and each channel receives a quantity of particulate matter therein.