Material:75% nylon,25% spandex,3Pair toeless zip compression socks,moisture wicking. Wide Calf Socks With Zipper – Perfect Fit For People With Big Calves, Zippered Compression For Those That Have Trouble Putting On Conventional Compression Socks. Graduated Compression improves circulation for fresher feet and legs throughout the day or in flight comfort. Provide mild squeezing for warmness and enhance blood moving through your legs. Perfect For Everyday Activity – Great For People Standing On Their Feet All Day, basketball players, joggers, athletes,Perfect For Nurses, Runners, Teachers, Cycling, Walking, Workout, Hiking, Flight Travel, And Ect. Ergonomic Tailoring Design,Washing instructions:hand wash and gentle washing program,hang dry,do not bleach,not ironing,not dry cleaning.