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 - Maximum stability for muscles and joints Optimum recovery and performance - Optimum thermal balance for endurance athletes Excellent heat and moisture management - Antibacterial, odor-reducing properties Padded zones to relieve pressure where its needed most - Perfect anatomical fit and extreme durability