Description 56% Nylon/22% COOLMAXÂ Polyester/18% Merino Wool/4% Elastane Built with Force technology to wick sweat and dry fast FastDry wicks away sweat Fights odor Temperature-regulating wool blend combines Merino with COOLMAX eco-made yarns Fine-gauge knit for a thinner, performance fit and feel Heel, arch and toe cushioning Arch support Achille's lock reduces heel lift Enhanced heel pocket for secure fit Ribbed channels improve ventilation on leg Raised grid pattern on arch for enhanced moisture management Abrasion-resistant yarns in heel, arch and toe Stretch top stays put and reduces tension Can also be worn as a liner Imported