DiaSox® are Made of 88% breathable cool-cotton yarn and manufactured in the USA using Lin-Toe® revolutionary technology. DiaSox Diabetic Socks are comfort socks that are suitable for diabetics and people with foot or leg swelling. Diasox are seam free with a unique knit top that helps prevent sagging without binding. Anti-microbial fabric treatment helps protect against fungal growth and bacteria. Men's Sizes S: 4.5-6.5 M: 6.5-9.5 L: 9.5-12 XL: 13-15 XXL: 16-20 Women's Sizes S: 5-7 M: 7-10 L: 10-13 XL: 14 + Comfortably fits Medium to Wide shoe widths. Manufactured with a unique knit top that stays up without binding or leaving marks. The Special Flat Toe Seam Sewing offers a seam-free feel that enhances overall foot comfort. Anti-microbial fabric treatment helps protect against fungal growth and bacteria. MADE IN U.S.A.