One of Bridgedale's best performing hiking sock!; Features a unique construction providing ankle flexion. Deep heel pocket and moisture management. Best fit for medium volume footwear. Best performance for waterproof and breathable footwear. Dense midweight cushioning remains comfortable all day. Ideal for extended backpacking, trekking and hiking. Consists of 41% new wool, 37% nylon, 21% endofil, 1% Lycra. Wash inside out with dark colors, tumble dry low. Available in a 3 pair variety pack.