Perfect for any season or adventure, these comfortable socks are made from the softest, finest quality materials in the world. Natural Merino wool sourced from the Rocky Mountains, and genuine baby alpaca wool from the Peruvian Andes combine The wool fibers in these socks are 100% natural and un-dyed. They have not been stripped or chemically processed with the standard “Superwash” wool treatment, so the wool can perform at its maximum potential as nature intended. Care: Turn socks inside out. Hand-wash, or machine wash on gentle cycle in cool water. Avoid agitation. Use only mild, enzyme-free liquid soap without bleach. (We recommend Outback Gold Wool Wash). Lay flat to dry naturally. Do not tumble dry. Specs: -Full terry loop cushion / mid-weight / crew height -Fiber Content: 62% Wool (31% Merino, 31% Baby Alpaca), 19% Nylon, 15% Cashlon, 4% Spandex ) -Terry Loop Interior: 80% wool (40% Merino, 40% Baby Alpaca), 20% *Cashlon -Un-dyed, natural color. -*Cashlon - extra soft nylon