Design: Thin, mesh knit made with recycled materials provides lightweight breathability evne during the toughest parts of your workout Star lacing wraps around the forefoot for reliable support In-Shoe Comfort: Plush cushioning in the tongue and heel provide enhanced comfort Helion(TM) superfoam grounds every movement with ultrasoft, full-foot cushioning CloudTec(R) construction softens every step, stride or move An X-shaped Speedboard(R) provides flexible support and explosive takeoffs Removable, cushioned insole Durability & Traction: Rubber tread pads provide enhanced grip