Made with natural, luxurious merino blend wool, Rapha Merino Socks are the finest cycling-specific socks out there. Designed to keep your feet warm in cold temperatures and cool in the heat, they make use of the temperature-regulating properties of merino wool, whilst the sweat-wicking, breathable fabric prevents moisture build up. With reinforced toe and heel boxes, the socks have been designed to prevent rubbing for maximum durability. - DETAILS AND MATERIALSDesigned for use in all conditions - Naturally antibacterial merino wool - Improved durability with nylon blend - Absorbent terry fabric in toe and heel - Main:60% Merino40% Nylon - Trims, Toe & Heel:100% Nylon