These men's socks were designed to keep you warm through the coldest conditions. They're made from wool-blend fabric that wicks away sweat, and they feature abrasion-resistant reinforcement for durability. 50% Merino wool / 22% acrylic / 14% virgin wool / 12% nylon / 1% elastin / 1% polyester. FastDry(R) wicks away sweat. Fights odor. Temperature-regulating wool blend. Heel, arch, toe, instep and leg cushioning. Arch support. Enhanced heel pocket for secure fit. Ribbed channels improve ventilation on leg. Mesh instep for breathability. Abrasion-resistant yarns in heel and toe. Stretch top stays put and reduces tension.