Swiftwick Flite XT Ankle Socks The Flite XT is the a technologically advanced sock providing all-around stability. It offers moisture-wicking fibers blister-free performance and medium compression for lasting arch support at any cuff height. Features Ankle Lock Technology featuring targeted ankle and heel support provides protection during quick movement Proprietary Grip Dry fiber in the heel and forefoot grips shoes to keep feet stable59% Nylon / 23% Olefin / 16% Polyester / 2% Spandex Machine wash cold. Tumble dry low. Do not bleach or iron | Swiftwick | Flite Xt Ankle Socks | Size Large In White | Nylon