Revitalize your feet and fish longer in tough conditions with the Xtreme Gear Compression Over The Calf Sock. Graduated support enhances circulation, reducing swelling and ensuring overall foot and leg comfort. Moisture-wicking Bamboo fibers will keep your feet dry, and the cushioned foot bed with arch support secures a comfortable fit with a blend of bamboo, polyester, and spandex. - 50% bamboo, 48% polyester, and 2% spandex