Thermolite blend ultra thin over-calf ski socks with minimum protection for men and women by Thorlo. These ski socks are designed for performance skiers who prefer a technical fit with foam fitted boot technology. The Thermolite ? blended yarn provides moisture management, durability and warmth. 1) Flat knit reinforcement yarn is added for protection and better fit.2) Pique stitching for additional stretch and fit.3) Extra stretch yarn added to conform more precisely to the ankle area.4) Pique stitching for additional stretch and fit.Fiber Contents: 55% Thermolite?, 28% Nylon, 10% Polyester, 7% Spandex.Size 9 fits women's shoe size 5 - 6.5Size 10 fits men's shoe size 6 - 8, women's shoe size 7 - 9Size 11 fits men's shoe size 8.5 - 10, women's shoe size 9.5 - 11.5Size 12 fits men's shoe size 10.5 - 11.5Size 14 fits men's shoe size 12 - 14Six Pairs Per Package.