CEP Progressive+ Snowboard Socks 67% Nylon (Polyamide), 23% Merino Wool, 10% Spandex - Unique combination of premium merino wool, polyamide and high-tech spandex 20-30 mmHg from ankle to calf, 18 mmHg consistent compression over the calf - Optimum thermal balance for endurance athletes Excellent heat and moisture management - Antibacterial, odor-reducing properties Optimum recovery and performance - Maximum stability for muscles and joints Perfect anatomical fit and extreme durability - Extra-flat toe seam