Durable, Dry Feet, No Blisters, Seamless Toe 41% Stretch Nylon, 30% Merino Wool, 25% Polyester, 3% Tencel, 1% Spandex CREW LENGTH: A sock that extends beyond ankle length, but not beyond the largest part of the calf. Typically 9 in. to 12 in. in length ULTRA-LIGHTWEIGHT: These socks are void of cushioning in any capacity and are designed for a feather-lite feel and fit Lifetime Warranty