UA Iso-Chill Compression Print Long ShortsWe 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 Strategic mesh panels for added ventilation where you need it Material wicks sweat & dries really fast Ergonomic design keeps seams off high abrasion areas & increases durability Exposed elastic Iso