This performance based entry level sock is ideal for all cold weather outdoor activities from skiing to sledding. Produced with DuPont Thermolite this over the calf sock provides the ultimate in comfort and warmth at an entry level price. Terry looping throughout provides cushioning and comfort. Elongated ventilation channels run from the toe to the top closure for superior moisture management. Woven in arch and ankle brace for a sure fit and support. 75% Thermolite polyester, 15% nylon, 5% acrylic, 5% spandex.