Stride Rite Little Boys' Monster No Show 6 Pack Sleepwear 67% cotton/22% polyester/8% nylon/3% spandex Machine Wash Our no show socks have hand linked toe seams ensuring a smooth and comfortable fit against childrens feet We use only the highest quality of materials to combat wear and tear Our cotton rich composition ensures that our hosiery feels good against little feet Our socks stay on and retain their shape when washed