An advanced cushioning midsole within a breathable upper and TORSION® SYSTEM for response defines the adidas adiZero Ace running shoe. Air-mesh upper adds maximum ventilation. adiPRENE® provides protection from harmful impact forces. adiPRENE®+ maintains forefoot propulsion and efficiency. TORSION® SYSTEM provides midfoot integrity. Quickstrike offers best lightweight durability and flexibility. Flex grooves give optimum forefoot flexibility. adiWEAR® outsole delivers best durability in high wear areas. Wt. 7.5 oz.