The Original Thermal Socks offered in a pack of three (3) pairs: Denim, Natural Gray and Black. These are thermal knit socks with ribbed cuffs to prevent them from sliding down your legs. A favorite for cold weather days, these socks are made of 60% pure new wool and 40% stretch nylon. They are Superwash treated which is a chemical process applied to the socks after its initial wash at the plant to prevent shrinkage despite numerous washings and dryings. These socks fit men's socks size 10-13. Environmentally friendly manufacturing process is used in making these socks to minimize undue risk and adverse effects on the environment. Made in Canada.