Launching as part of a sustainable collection featuring a shared two-tone color scheme, the Nike Space Hippie 02 ‘Grey Volt’ makes use of a laceless slip-on silhouette with an elastic cuff and extended pull tabs at the tongue and heel. The knit upper, built with assorted materials that include recycled plastic water bottles and T-shirts, sits on a Crater Foam midsole that blends standard foams and Nike Grind rubber. An insole constructed from ZoomX scraps provides lightweight cushioning.