Design CLARINO Trivela(TM) microfiber upper provides lightweight support and flexibility WATERPROOF+ breathable membrane fused to lining and sealed with a waterproof bottom gasket ARIAPRENE(R) tongue and bootie construction for secure foot lockdown and breathable support CARBITEX GearFlex(TM) propulsion plate enhances the ability to harness ground reaction forces In-shoe Comfort PMXNITROGEN+ Footbed delivers lightweight, responsive cushioning PMXNITROGEN+ Midsole offers maximum energy return and underfoot support Durability and Traction TPU outsole with Fast Twist insert system provides multidimensional traction throughout the life of the shoe