Functional compression socks CRAFT ADV Wool Compression are designed for any activity in very cold environments. They support your performance while keeping you warm and wicking away excess sweat. 47% merino wool, 51% polyamide, 2% elastane - ergonomic cut to distinguish between right and left foot - terry on the bottom of the foot for increased thermal comfort - seamless toe area - compression strips in the toe and heel area for proper fit