A refreshed version of the Classic Rib, the New Classic Rib is a cushioned crew sock that offers wonderful stretch and luxurious, soft Merino wool next to your skin. Great fit and maximum comfort. Made using WOW technology. Men's Sizing: Small (Men's Shoe 3-5.5) - Medium (Men's Shoe 6-8.5) - Large (Men's Shoe 9-11.5) - XL (Men's Shoe 12-14.5)