NIKE, Inc.
Footwear with soles having auxetic structures

Abstract:

A sole structure for an article of footwear can include provisions for providing auxetic behavior in the sole structure. The sole structure can comprise multiple layers that may each have different types of auxetic material. The outsole can include at least one auxetic portion joined to one non-auxetic portion. Similarly, the midsole can include at least one auxetic portion joined to one non-auxetic portion. Apertures formed in the auxetic portions of the outsole can extend through at least part of the midsole.