Skyline Socks Men's San Francisco Skyline Crew Socks 55% Nylon, 18% Polyester, 13% Elastane, 12% Cotton, 2% Spandex Imported Machine Wash Athletic crew cut featuring iconic designs with ribbing for performance Elastic arch for support and fit Reinforced toe and heel for comfort and durability Skyline reflect tek to be seen at all hours of the day 55 percent nylon, 18 percent polyester, 13 percent elastane, 12 percent cotton, 2 percent spandex