Fits Unisex Medium Hiker Crew 3-Pack Stone Socks SM (Men/'s Shoe 3.5-5.5, Women/'s Shoe 5-7) Mid-weight design with cushioning surrounding your entire foot, ankle, and lower calf Color-Replacementd seam on toe so you won't forget your size Made in the USA Materials: 70% Merino Wool, 22% Nylon, 6% Polyester, 2% Lycra spandex Sizing: Small: Men's 3.5-5.5, Women's 5-7. Medium: Men's 6-8, Women's 7.5-9.5. Large: Men's 8.5-10, Women's 10-11.5. X-Large: Men's 10.5-12.5, Women's 12-14. XX-Large: Men's 13-15.5, Women's 14.5-16.5.