Smartwool Men's Hunt Extra Heavy Over the Calf Socks 73% Merino Wool, 26% Nylon, 1% Elastane Made in USA with Imported Yarn Hunt-ready, distraction-free comfort in a heritage style Taller crew height accommodates wide range of hunting boots Smartwool fit system with arch and ankle support helps keep sock in place Flat knit toe seam - Style: SW001352 Care: Machine Wash Warm Gentle Cycle. Do Not Bleach. Tumble Dry Low. Do Not Iron. Do Not Dry Clean.