A shock absorber includes a three-dimensional structure composed of a unit structure repeatedly, regularly and continuously arranged in at least one direction, the unit structure being a three-dimensional shape formed by a wall having an external shape defined by a pair of parallel planes or curved surfaces. In the shock absorber, a differently shaped portion which does not correspond to the wall defining the unit structure is locally provided in a shock absorbing region which is a region in which the three-dimensional structure has the unit structure disposed.

A shock absorber includes a three-dimensional structure composed of a unit structure repeatedly, regularly and continuously arranged in at least one direction, the unit structure being a three-dimensional shape formed by a wall having an external shape defined by a pair of parallel planes or curved surfaces. When the unit structure occupies a cuboidal space representing a unit space and defined by mutually orthogonal three sides having a first side extending in an axial direction in which the shock absorber exhibits a shock absorbing function as the shock absorber receives a load and second and third sides each extending from one end of the first side in a direction orthogonal to the axial direction, and the first side has a length L1 and a longer one of the second and third sides has a length L2, the shock absorber satisfies 1.1≤L1/L2≤4.0.

A fluid-filled chamber includes first subchamber having a substantially U-shape. The fluid-filled chamber also includes a second subchamber having a substantially U-shape and being spaced apart from the first subchamber in a direction extending along a longitudinal axis of the fluid-filled chamber.

In example implementations, a self-adjustable sole is provided. The self-adjustable sole includes a soft sole, a flexible sole and a hard sole. The soft sole includes a first sensor. The flexible sole includes a bag containing an amount of fluid. The hard sole includes a controller that is in communication with the first sensor and the bag. The controller controls the amount of the fluid in the bag based on data collected by the sensor.

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 fluid-filled chamber includes first subchamber having a substantially U-shape. The fluid-filled chamber also includes a second subchamber having a substantially U-shape and being spaced apart from the first subchamber in a direction extending along a longitudinal axis of the fluid-filled chamber.

A fluid-filled chamber includes first subchamber having a substantially U-shape. The fluid-filled chamber also includes a second subchamber having a substantially U-shape and being spaced apart from the first subchamber in a direction extending along a longitudinal axis of the fluid-filled chamber.

A shoe sole or insert of a unitary material having a gradual change in hardness and/or density characteristics and a method manufacturing the same.

Multi-layered structures and methods for producing them are disclosed.

The present invention refers to a footwear consisting of an upper portion and a sole, wherein the upper portion is provided with a soft and flexible deconstructed plantar area able to allow the foot to rest on it, once the footwear has been worn, and the sole is fixed to the upper portion below the plantar area and is provided with a plurality of flexible bearings, arranged in correspondence with respective sensitive areas for the plantar reflexology massage.