Worlds Softest Womens Classic Holiday Collection Knee-high Socks (Elf Stripe) 80% Ultra-soft acrylic/17% Nylon/ 2% Polyester/1% Lycra Spandex Cushioned top, designed to stay up without binding. Reinforced Heel & toe for increased durability in high stress areas. Full cushioned foot bed provides all day comfort Flat knit toe seam for reduced rubbing and irritation.