The Undercover Cush has a no-show design with built-in cushioning! This sock will help give that seamless and classy feeling! FEATURES Soft Turn Welt Top Seamless Toes Light Cushion Sole 33% Merino Wool 33% Rayon from Bamboo 28% Stretch Nylon 6% Spandex PRODUCT DETAILS Sock Type: No Show Socks Fitting: Women's Small/Medium - Shoe sizes 4 – 7.5 (European Sizing 35 – 38) Women's Medium/Large - Shoe sizes 8 – 11 (European Sizing 39 – 43) Men's Medium/Large - Shoe sizes 7-10 (European Sizing 39 - 43) Men's Large/X-Large - 10.5 – 13 (European Sizing 44 – 47) Men's XX-Large - 13.5 – 16 (European Sizing 48 – 50)