SmartWool Women's PhD Ski Medium Socks 62% Merino Wool, 36% Nylon, 2% Elastane Knit in USA Virtually Seamless toe Sock Height: Over the Calf 13" overall height Style: SW015028 Care: Machine Wash Warm Gentle Cycle. Do Not Bleach. Tumble Dry Low. Do Not Iron. Do Not Dry Clean.