Dahlgren Adult Forest & Field Socks, Charcoal, X-Large 75% Polyester, 23% Nylon, 2% Spandex Made in US Patented Dri-Stride technology absorbs transfers and removes moisture keeping feet drier and more comfortable all day long Substantial cushion throughout for maximum comfort Merino/Alpaca in moisture zones and in wicking channels absorb moisture and provide soft insulation Toe/Heel/Wicking Channels: 55% Merino Wool, 27% Nylon, 18% Alpaca Body: 75% Polyester, 23% Nylon, 2% Spandex Made in the USA