2 Pack Elite Performance Pro Thick Crew Welt Top Construction for Comfort and Fit 3 x 1 Comfort Ribbing with LycraŽ Spandex Flat-Knit Construction Reduces Bulk and Conforms to Shape of Foot Fully Reciprocated Heel Construction for Perfect Fit LycraŽ Spandex Arch Support Ribbing Fully Reciprocated Toe Construction for Perfect Fit DuraspunŽ Pro-Thick Cushioning for Maximum Shock Absorption and Protection Content: 67% DuraspunŽ Acrylic, 19% Acrylic, 10% Polyester, 3% Nylon, 1% LycraŽ Spandex |