Champion Men's No Show Sock for Larger Shoe Sizes (6-Pack) cotton,spandex,polyester,nylon Plush cottony yarns wick sweat, control moisture buildup, to keep feet cool and dry. Zoned cushioning and arch support help prevent shock and soreness. Allover stretch helps assure better fit. Size 10-13  fits shoe sizes 6 to 12. Fiber Content: "White: 74% ring spun cotton; 21% polyester; 3% natural latex rubber, 1% spandex. Black: 75% ring spun cotton; 20% polyester; 3% natural latex rubber, 1% nylon, 1% spandex"