Your feet deserve to stay warm and comfortable. Now your feet can with the reinforced heel, and soft poly-wool blend that offers shock absorption and odor resistance. So you have a comfortable custom sock protecting your feet all day. Four-Pack of Socks Fit men&';s Sizes: M: 6 - 8-1/2 L: 9-12 XL: 12-1/2 - 15 Fits Women&';s Sizes: M: 7 - 9-1/2 L: 10-13 XL: 13-1/2 - 15 US Sizing Wool Blend keeps you dry and resists odor Heel & Toe are reinforced for durability Arch is supported by Spandex for optimum compression and support Sole is cushioned for shock absorption and abrasion prevention Smooth flat seams in toe for comfort all day Materials: 46% Polyester 25% Acrylic 15% Wool 12% Nylon 2% Rubber Care Machine Wash warm wit similar colors Do NOT Bleach Tumble dry low Do not Iron