Get free shipping and sales for the Thorlos Extreme Snowboarding 2-Pair Pack Black Hosiery For extreme snowboarding, you need extreme comfort. You’re riding on Thor los country now friend. Features a sock designed for performance skiers who prefer a closer fitting boot. Ribbed cuff for stay-up comfort. Thermolite for maximum warmth and wicking. Feather-thin cushioning in shin protects from boot pressures. Thin cushioning in arch and flat knit instep maximizes ventilation, fit and comfort. Flat knit at ankle for forward lean comfort. Thin cushioning in ball/heel for shear protection and comfort. Over-the-calf length. Consists of 76% Thermolite , 22% nylon, 2% spandex. Machine wash inside out, do not bleach. Sold as a 2-pair pack.