The Assos RS Socks were created to be the idea choice for riders in warmer climates. These socks are light and breathable to keep you comfortable through a long summer day in the saddle. Assos did tons of testing in warm weather to come up with the perfect material for optimal performance. A soft micro-fiber called hydrogen blended with Lycra was selected due to its light and compressive through the foot, ankle, and lower leg. The arch of the foot benefits from a wrapped band of ribbed mesh for boosted breathability. The Assos RS socks are the perfect ultra-lightweight and ventilated socks for the hottest days in the saddle.