Space Hippie is a story of trash transformed. From the upper to the outsole, at least 25% of the Space Hippie 04 is made from recycled material, by weight. Not only is it the most lightweight silhouette within the collection, it also has the lowest carbon footprint. About 85% of its "Space Waste Yarn" upper is made up of recycled polyester—made from recycled plastic bottles, t-shirts and yarn scraps. A soft, Crater Foam midsole combines Nike Grind with a blend of foams for stability and a unique aesthetic.