MediPEDS Men's 4 Pack Diabetic Crew Socks 45% Cotton, 42% Polyester, 9% Polyester, 3% Nylon, 1% Lycra Spandex Imported Machine Wash Coolmax keep feet dry Non-binding funnel top Cushion sole protects feet Lycra spandex offers the ultimate fit and helps hug feet, reducing slippage which could cause blisters