Lighter is better. The adidas adiZero CS running shoe features a breathable ClimaCoolŽ design that delivers the most cushioning you can get for the weight. Air mesh upper provides maximum ventilation. adiPRENEŽ insert adds comfort and shock absorption. adiPRENEŽ+ maintains forefoot propulsion and efficiency. LightStrikeŽ EVA is lighter than conventional midsole. TorsionŽ System offers midfoot integrity. Blown rubber outsole gives lightweight grip and cushion. Wt. 8.2 oz.