Space Hippie 01 "Obsidian/Orange" sneakers The Nike Space Hippie 01 sneakers are the brand's lowest carbon-footprint shoes to date. This low-top pair features sock-like 'Space Waste Yarn' uppers – knitted from about 85% recycled polyester made from plastic bottles and material scraps – while the Featherlight Crater Foam midsoles add cushion and support underfoot. Imported Composition Sole: Rubber 100% Lining: Fabric 100% Outer: Fabric 100%