Woolrich Men's Full Stripe 2 Pair pack Ragg, Charcoal, Sock Size:10-13/Shoe Size: 6-12 76% Merino Wool/18% Nylon/5% Lycra/1% Acrylic Made in US Machine Wash Flat toe seam Merino wool moisture management 76 percent merino wool, 18 percent nylon, 5 percent lycra, 1 percent acrylic