Warm and Fuzzy Wool Blend Double Layer Construction Inner Fabric Uses Natural Silk Men's Silk Socks The Secret to Warmth The double-layered knit creates an air layer between the fabric and the lining, preventing warmed air from escaping. For those concerned about cold feet. The elastic at the opening is loose, providing a comfortable fit without constriction. Uses natural silk yarn for a gentle feel. For those concerned about dry, cracked heels. Men's Size: 25-27cm Quality: Polyester, Cotton, Silk, Wool, Polyurethane, Other Men's Socks Men's Socks Men's Socks Black Socks Mid-Length Socks Silk Socks Warm Silk Socks