The SockGuy Medieval Unicorn Wool 8” Crew Sock is made from TurboWOOL-- a superior blend of 50% Merino WOOL and 50% polypropylene. This blend is 5 times the strength and durability of Merino wool alone. Shrink-resistant and itch-free these Wool socks will keep your feet drier and provide excellent insulation in all weather conditions. SockGuy Wool socks also feature their "Easy-Fit" cuff and "Stretch-to-Fit" sizing system for maximum fit and performance. They out-wick and evaporate moisture better than any other wool sock on the market today.