adidas Running - ClimaCool Rotterdam II W (Altitude/White) - Women's: The perfect marathon shoe for most runners. The perfect fast tempo shoe for most runners. Full cushioning with QuickStrike forefoot, ClimaCool and medial support for all runners. 360 degree reflectivity for safety in low-light conditions. CliamCool upper for moisture transport and ventilation. Perforated ClimaCool sock liner for increased airflow. adiPRENE provides protection from harmful impact forces. adiPRENE plus insert for forefoot propulsion and efficiency. ClimaCool chassis for best ventilation and midfoot support. Midfoot second density inserts to reduce over-pronation. QuickStrike for best lightweight durability and flexibility. Flex grooves for optimum forefoot flexibility.