Sigvaris 822C Midtown Microfiber 20-30 mmHg Closed Toe Knee High Compression Socks for Men; perfect for men to wear everyday! The Midtown Microfiber series is knitted so 100% of the soft microfiber is on the inside for comfort and a multifilament yarn is on the outside for durability. Microfiber is an extremely fine synthetic fiber that can be knitted into textiles with the texture and drape of a natural fiber cloth but with enhanced durability & breathability. Shoe Size Accommodations: Short Length works Men's Shoe Sizes 7-11, Long Length works with Men's Shoe Sizes 9.5-14, Extended Shoe size (MX, LX, XX) works with Men's Shoe Sizes 12.5-17.5. Fiber content: 87% Nylon, 13% Spandex. Latex Free.