The Q36.5 Compression Wool Socks are designed to keep you warm without becoming bulky so you can keep your feel and stay engaged on a ride. Super fine wool fibers help keep your extremities warm while offering a compressive fit to support muscles. Q36.5 recommends washing the socks before their first use. The Q36.5 Compression Wool Socks combine comfort, performance, and warmth for your cold weather rides.