EMPEIGNE POUR ARTICLE DE CHAUSSURE COMPORTANT UNE CONFIGURATION AUXÉTIQUE

摘要

An upper for an article of footwear, comprising: a first region adjacent a throat opening of the upper formed from a first material having a first elasticity and a second region that is a part of the forefoot of the upper formed from a second material having a second elasticity, wherein the second elasticity is less than the first elasticity; a first set of openings arranged in an auxetic pattern in the first region, the first region changing from a first neutral state to a first auxetically expanded state when tension is applied along a first axis parallel with the first region; a second set of openings arranged in an auxetic pattern in the second region, the second region changing from a second neutral state to a second auxetically expanded state when tension is applied along a second axis parallel with the first region; and wherein the first set of openings has a first opening with a first perimeter length, wherein the second set of openings has a second opening with a second perimeter length; and wherein the first perimeter length is greater than the second perimeter length when the first region is in the first neutral state and when the second region is in the second neutral state.