Under Armour IsoChill Shorebreak Gaiter - OS - Hydro CamoUnder Armour Men's Iso Chill Shorebreak Neck Gaiter UA flattened out the fibers and added some science to create a game changing fabric that quickly pulls heat away from the skin keeping you calm, cool, and crushing at max capacity. Iso Chill fabric helps disperse body heat, making it feel cool to the touch Material wicks sweat & dries really fast Anti odor technology prevents the growth of odor causing microbes Length: 20in 88% Polyester 12% Elastane