Nike Mens Space Hippie 01 Shoes 'Anthracite'Anthracite White Black Shoes The FlyKnit upper is made from "Space Waste Yarn." These yarns are made from 100 percent recycled material including recycled plastic water bottles, T shirts and yarn scraps. They are stretchy, airy and lightweight The bootie like construction helps create a snug, comfortable fit that forms to your foot Regrind rubber and recycled Crater foam underfoot feel soft and add speckles of color for a 1 of a kind look and feel.