Woolrich Men's Heritage Collection 2 Pack Tipped Stripe, Black, Sock Size:10-13/Shoe Size: 6-12 66% Merino Wool/27% Nylon/6% Polyester/1% Lycra Made in US Machine Wash Lightweight with cushion impact zone Seamless toe Arch support 66 percent merino wool, 27 percent stretch nylon, 6 percent polyester, 1 percent lycra spandex