Travel Pro Over The Calf Support Sock The Travel Pro is designed to enhance circulation while limiting fatigue durning trave and walking. This over the calf design combines a snug soothing wrap with our patented moisture control system and mesh vents for cool, refreshing comfort. Content: 40% Stretch Nylon, 31% X2OŽ Acrylic, 26% Wool Dri-releaseŽ (88% Polyester, 12% Wool), 3% LycraŽ Spandex |