K. Bell&reg; Ladies' No-show Sock 9-pack - Black and White Extended Sizes Imported 9-Pack, Signature No-Slip Pocket Heel, 5 Black and 4 White Socks, Extended Sizes Soft cotton blend Signature no-slip pocket heel Great fit, fashion and comfort Extended Size Black and White: 74% Cotton, 24% Polyester, 1% Spandex, 1% Rubber Sizing: Extended Size: Sock Size 10 - 13 (Shoe Size 6.5 - 12)