LOW RISE RUNNING SOCK Tough is the new pretty. These low rise all sport socks are designed to keep you cool and go the distance. Raised heel tab to pad Achilles tendon Vector heel creates defined heel cup for optimal fit Vented knit top allows for faster cooling and moisture release Arch band provides gentle pressure to lift and support Seamless five toe construction promotes circulation, removes moisture, eliminates friction and blisters between toes Unisex sizing 90% Polyester; 10% Spandex. Machine washable. Wash in gentle cycle. Line dry. Do not bleach or iron.