60% Cotton,37% Polyester,2% Nylon, 1% Spandex Premium Materials:Superior cotton and polyester blend,Use spandex and nylon knitting to deliver a snug fit and retain shape even after repeated washings. Soft & Comfy:Full cushioning for ultimate support in any work boot or shoe.It helps you avoid blisters during your heavy duty work or daily activities. Moisture Control:The advanced technical fibers wick away sweat and moisture.Moisture wicking properties to keep smell fresh and feet dry and breathable. Durability:Nylon blend knitting provide added durability in high stress areas,it avoids holes dramatically,more protection in most extremely environment. Performance:Deep heel and elastic top ensure the sock fits the contours of the foot so perfectly,super stretchable and boost blood circulation easily.