GOLD TOE 2-pk. Power Sox Heavy-Weight Unisex Crew Boot Socks, Charcoal, Large Fits Mens Shoe Size: 9 - 12 1/2 Fits Womens Shoe Size: 10 1/2 - 13 89% Cotton, 7% Polyester, 3% Nylon, 1% Spandex. Strategic Cushioning, Cotton For Comfort, Spandex For Better Fit. Crew Heavy Cushion Boot Sock.