Description 46% nylon/27% COOLMAX polyester/22% merino wool/5% elastane Built with Force technology to wick sweat and dry fast FastDry wicks away sweat Fights odor Temperature regulating wool blend combines Merino with COOLMAXÂ eco-made yarns Finge-gauge knit for a thinner, performance fit and feel Heel, arch and toe cushioning Arch support Mesh instep for breathability Enhanced heel pocket for secure fit Abrasion-resistant yarns in heel, arch, and toe Can also be worn as a liner Imported