75% Ultraspun Polyester, 20% Nylon, 5% Spandex Made in the USA Ultra-Dri technology wicks moisture for dry and cool comfort Half cushion foot for added padding and impact protection Mesh ventilation make these socks breathable and lightweight Machine WashableIntegrated arch support reduces foot fatigue during extended wear 2 pair pack of socks with stay-up top stays on leg and doesn't bunch or slip