NIKE Space Hippie 04 Iron Grey CD3476-002. NIKE Space Hippie 04 iron grey. New model from Nike, the SPACE HIPPIE is made with 25% recycled material by weight. Ultra light. Space Waste Yarn fiber upper with nearly 85% recycled polyester from plastic bottles, t-shirts and fabric scraps. Crater foam midsole combines Nike Grind material with a mixture of foams for stability and a unique look. Insole made from ZoomX foam scrap, cushioning Nike NEXT% running shoes. Very limited quantities.