SmartWool PhD Slopestyle Light Ifrane Socks - Past Season 59% Merino Wool, 39% Nylon, 2% Elastane Knit in USAof Imported Yarn Virtually Seamless toe 14" overall height Sock Height: Over the Calf Style:SW015038 Care: Machine Wash Warm Gentle Cycle. Do Not Bleach. Tumble Dry Low. Do Not Iron. Do Not Dry Clean.