Wigwam's Canada II Heavyweight sock is the latest version of their famous Canada sock (warmest sock they produce). Made to take on the coldest conditions of the Arctic and beyond. Wool terry loops trap plenty of air to form a warm cushion around the foot. Make sure you wear footwear big enough to accommodate these socks or you'll loose their warming effect.
42% Wool, 37% Stretch Nylon, 20% Stretch Polyester, 1% Spandex