Design: Perforated synthetic leather composite uppers enable superior fit and breathability Offset Boa(R) L6 dial is mounted to the center flap, creating a sleek profile with quick adjustments In-Shoe Comfort: Integrated, seamless midsole and upper construction sets a new level of fit, stability and lightweight performance Surround-wrapping upper structure reduces overlap and provides a glove-like fit Women's specific last for a natural, comfortable fit Durability & Traction: Low stack height midsoles stabilize feet and maximize power transfer efficiency Lightweight glass fiber-reinforced nylon soles deliver efficient power transfer to the pedals SPD-SL cleat compatible