Designed and tested by Eric Koston.The Kost-One Recycled Edition is the Frankenstein thrash monster of the skate world. This shoe uses leftover factory materials to help reduce waste, also making each pair unique from the other. Warning: what you see pictured here will look different from your purchase, but you’ll be helping our environment! Flexible cupsole construction. 50% regrind 50% gum rubber outsole.