Design: Flat knit upper with zonal engineering molds to the foot for a sock-like fit Deep active Foot Frame(TM) cradles the heel for a secure ride Carbon fiber plate bows in the middle for an amazingly suspended feeling Super critical EVA rocker frame supports the MetaRocker(TM) for a consistently smooth, easy ride Vegan In-Shoe Comfort: PEBA midsole foam provides plush cushioning and energy return with every step Additional Details: Weight: 9.2 oz / 261g Stack Height: 46mm / 41mm