85% cotton ,12 % Polyester,3% Spandex Premium Cotton:Made of premium combed material and acrylic blend.Use a spandex and polyester knitting to deliver a snug fit and retain shape even after repeated washings,breathable and elastic. Right Thickness:Made of superior material for more comfortable and performance,they also have the right thickness for all seasons sports or daily activity. Durability:The socks of heels and toes are reinforced to enhance the durability and provide more protection.High stretch fabrics makes sure that you won’t feel too tight wearing these socks. Perfect Fit:Arch support to improve feet arch fatigue and keep sock in good place.The socks have just the right amount of cross stretch,so it stays in good condition for a perfect fit and won’t slip down. Moisture Wicking: While the fabrics maintains airflow so your feet stay dry; Powerful moisture-wicking material with mesh venting blend keeps your feet cool and dry.