Rubber sole Heel measures approximately 1 Men’ s premium shoe with sport-inspired heritage for everyday street wear Sock-like fit; Stretchy knit upper offers adaptive support Boost midsole for cushioning and energy return TPU plugs and molded heel patch for stability; Rubber outsole provides secure traction This product is made with Primeblue, a high-performance recycled material made in part with Parley Ocean Plastic. 50% of the upper is textile, 75% of the textile is Primeblue yarn. No virgin polyester.