New With Tags UA website: We 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-Chill waistband moves with you & feels cool Updated gusset design provides ultimate support & comfort Drop-in Strength Pocket™ on right side for easy storage Odor control technology minimizes odor