Item Description Knit with a superior blend of polypropylene and merino wool, Turbo Wool, with terry padding and a flat knit upper 4" cuff for more thermal protectionIsolWool has 5 times the strength and durability of Merino wool Shrink-resistant and itch-free these socks wick and evaporate moisture better Feature Easy-Fit cuff and Stretch-to-Fit sizing system for maximum fit and performanceItem Specificationscolor: brownsize: 5-9: