Trimfit Boys Dress Crew Socks 6-Pack 3 White, 1 Navy, 1 Black, 1 Khaki Comfortoe technology 75% cotton / 21% Nylon / 3% Spandex / 1% Rubber Machine wash cold with like colors. Only non-chlorine bleach when needed. Tumble dry low. Do not iron Trimfit. Wear Tested&reg since 1932