Design: Made of engineered recycled jacquard mesh Extended heel pull for easy on-and-off In-Shoe Comfort: Anatomical Achilles construction for added comfort and support Early stage meta-rocker supports a smooth transition through toe-off SwallowTail(TM) heel geometry and extended crash pad reduces landing impact CMEVA midsole foam provides maximal cushioning Durability & Traction: Durabrasion rubber outsole Additional Details: Weight: 8.4 oz 27mm heel / 22mm forefoot