Fabric: 47% combed cotton, 31% nylon, 18% polyester, 4% elastane (may vary with color), Recommended: Machine Wash in 40 C / 104 F. Avoid Bleaching or Ironing the socks. Socks will last longer if you keep them out of the dryer., Kill it in comfort with our all-day Arch Support, Infiknit technology never rips, never tears. Made for good. Stance took their super durable Infiknit technology to craft a sock that won't rip or tear then added soft combed cotton with a flexible lightweight cushion and put it all on a classic black bandana print for extra style cred. Welcome to the neighborhood.