SmartWool Men's PhD Ski Light Pattern Socks 57% Merino Wool, 41% Nylon, 2% Elastane Knit in USA Virtually Seamless toe Sock Height: Over the Calf 14" overall height Style: SW015035 Care: Machine Wash Warm Gentle Cycle. Do Not Bleach. Tumble Dry Low. Do Not Iron. Do Not Dry Clean.