Lorpen Liner Coolmax Socks 75% Coolmax/ 15% Nylon/ 10% Lycra Imported Ultra thin and light weight Coolmax liner, keeps your foot dry and cool in warmer conditions May be worn on it's own as a great light weight sock or as a first layer under a heavier outer sock. High Lycra content keeps the socks wrinkle free and in place SBS (Stitch by Stitch) toe seam ensures no rubbing or irritation