Under Armour, Inc.
Article of apparel including fabric having auxetic structure

Abstract:

An article of apparel has at least one panel including a first material having a first modulus of elasticity and a second material having a second modulus of elasticity, the first modulus of elasticity being greater than the second modulus of elasticity. An auxetic structure is provided by the first material on the panel, the auxetic structure comprising a pattern of reentrant shapes. A fill portion is provided by the second material on the panel, the fill portion formed by a plurality of stitches positioned inside of each reentrant shape of the auxetic structure, and the fill portion substantially filling an interior area defined by each reentrant shape. The fill portion is a base layer of the at least one panel and the auxetic structure is an auxetic layer positioned on the base layer.