Like space heaters for your feet, these high-performance socks stymie the raw temperatures of ice climbing and cold-weather mountaineering. Tightly woven from a blend of 75% chlorine-free merino wool that’s soft and itch-free for warmth and long-lasting cushioning. Nylon and polyester balance durability and wicking performance. The soft, felted footbed cushions and insulates both the top and bottom of the foot; it lasts the lifetime of the sock. The arch band and welt provide full-day support without constricting or sloughing into boots. Looped Lintoe construction creates the flattest seam possible for non-chafing comfort. Length from heel to welt is 10″. Made in U.S.A. Tightly woven from a blend of 75% chlorine-free merino wool that’s soft and itch-free for warmth and long-lasting cushioning. Nylon and polyester balance durability and wicking performance. Length from heel to welt is 10″. The soft, felted footbed cushions and insulates both the top and bottom of the foot; it lasts the lifetime of the sock. The arch band and welt provide full-day support without constricting or sloughing into boots. Looped Lintoe construction creates the flattest seam possible for non-chafing comfort. Available Colors Charcoal Heather, Mid Grey Heather.