Mens XL Ribbed 100% Cotton Socks Sizes US 12 To 15 (Pack Of 6) Cotton, , Sizes US 12-15, UK 11-14, EUR 45-49. Mens comfortable ribbed socks. Ideal work or suit socks. Please Note: All our socks that have been advertised as 100% Cotton Socks may have a trace of mixed fabric and elastic. It is advisable to take extra precaution if you are allergic to any other fabrics.