The mens northwave extreme winter high socks are made of a soft warm blend of merino wool and polyamide for complete comfort featuring a reinforced tip and heel for optimum durability the bike socks have a tight knitting construction for a next to skin feel lm features mens northwave extreme winter high socks made of merino wool and polyamide for warmth and comfort tight knitting construction for a next to skin feel reinforced tip and heel for added durability double hem weig