MediPEDS Men's 8 Pack Diabetic Quarter Socks with Non-Binding Top, Shoe Size: 12-15 66% Polyester, 30% Coolmax Polyester, 3% Lycra Spandex, 1% Nylon Made in US Machine Wash Coolmax keep feet dry Non-binding top Cushion sole protects feet Lycra spandex offers the ultimate fit and helps hug feet, reducing slippage which could cause blisters