PEDS Women's Low Cut Socks with Arch Support and Tab Back, 6 Pairs 73% Acrylic, 23% Polyester, 3% Lycra Spandex, 1% Nylon Imported Machine Wash Arch support keeps socks in place Low cut socks sold in a convenient six pair pack Back pull tab for easy on and off wear and to prevent shoes from rubbing against back of heel Lycra fiber offers the ultimate in comfort and fit Satisfaction guarantee-if you are not completely satisfied with your PEDS product, simply return them to us for replacement