point6 Light Cushion 3/4 Crew Socks (Silver, Medium) 63% Merino Wool/ 34% Nylon/ 3% Spandex Imported 63% merino wool, 34% nylon, 3% spandex Maintain optimum body temperature at 98point6 degrees (this is where we get our name). Wool does this! Taller silhouette protects against road debris. Cushion under foot machine wash and dry, warm. No bleach. Turn inside out for best results. China