One or more aspects of the present disclosure are directed to bladders that incorporate a multi-layer optical film that impart a structural color to the bladder. The present disclosure is also directed to articles including the bladders having a multi-layer optical film, and methods for making articles and bladders having a multi-layer optical film.

A traction element arrangement for a sole structure of an article of footwear is described. Traction elements of a first group are associated with a lateral side of the sole structure. Traction elements of a second group are associated with a medial side of the sole structure. Traction elements of the second group include medial rotational traction elements that have a plurality of stud elements arranged in a circular grouping. Stud elements may be aligned laterally across the sole structure with traction elements of the first group. Stud elements may be aligned longitudinally across the sole structure to be arranged in different configurations along an outside medial side or an inside medial side.

A traction element arrangement for a sole structure of an article of footwear is described. Traction elements of a first group are associated with a lateral side of the sole structure. Traction elements of a second group are associated with a medial side of the sole structure. Traction elements of the second group include medial rotational traction elements that have a plurality of stud elements arranged in a circular grouping. Stud elements may be aligned laterally across the sole structure with traction elements of the first group. Stud elements may be aligned longitudinally across the sole structure to be arranged in different configurations along an outside medial side or an inside medial side.

A shoe sole (100) comprising a bottom surface, the bottom surface having a front array (110) of ground engaging formations having a first height or depth, and a rear array (120) of ground engaging formations having a second height or depth, the rear array of ground engaging formations generally located at a heel portion of the sole, wherein the first height or depth is greater than the second height or depth.

An article of footwear may include an outsole having an opening extending from a top face of the outsole to a ground-contacting face of the outsole, and a traction member disposed within the opening in the outsole. The traction member has a protruding portion and flange portion extending from an upper end of the protruding portion. The flange portion is secured to the top face of the outsole.

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.

A shoe includes an outsole having a heel region, a midfoot region, a metatarsal region, and a toe region. The heel region extends longitudinally from the heel end to the midfoot region, the midfoot region extends longitudinally from the heel region to the metatarsal region, and the toe region extends longitudinally from the toe end to the metatarsal region. The outsole has a medial side region, central region, and a lateral side region. A bottom surface of the outsole defines a concavity extending longitudinally from within the heel region to at least within a portion of the midfoot region. The concavity extends laterally within the central region. The concavity has a width at its widest point that is at least between 50% and 80% the width of the outsole at that point.

A shoe includes an outsole having a heel region, a midfoot region, a metatarsal region, and a toe region. The heel region extends longitudinally from the heel end to the midfoot region, the midfoot region extends longitudinally from the heel region to the metatarsal region, and the toe region extends longitudinally from the toe end to the metatarsal region. The outsole has a medial side region, central region, and a lateral side region. A bottom surface of the outsole defines a concavity extending longitudinally from within the heel region to at least within a portion of the midfoot region. The concavity extends laterally within the central region. The concavity has a width at its widest point that is at least between 50% and 80% the width of the outsole at that point.

Described is a sock, in particular a soccer sock, having at least one first portion with a synthetic fiber having a diameter of less than 1 μm, wherein the at least one first portion is arranged at least partly in a heel part of the sock, and wherein the at least one first portion comprises more than 30%, preferably more than 50% and more preferably more than 80% of the surface of the sock encompassing a foot of a wearer when worn.

Described is a sock, in particular a soccer sock, having at least one first portion with a synthetic fiber having a diameter of less than 1 μm, wherein the at least one first portion is arranged at least partly in a heel part of the sock, and wherein the at least one first portion comprises more than 30%, preferably more than 50% and more preferably more than 80% of the surface of the sock encompassing a foot of a wearer when worn.