SmartWool Men's Anchor Line Socks 61% Merino Wool, 37% Nylon, 2% Elastane Knit in USAof Imported Yarn Supportive arch brace Virtually seamless toe Sock Height: Crew Style: SW0SW960 Care: Machine Wash Warm Gentle Cycle. Do Not Bleach. Tumble Dry Low. Do Not Iron. Do Not Dry Clean.