HeatGearA(R) Armour is our original performance baselayer-the one you put on first and take off last. So we made it extra comfortable by wicking sweat and stretching so you can move no matter what. Features: Super-light HeatGearA(R) fabric delivers superior coverage without weighing you down Strategic mesh panels for added ventilation where you need it Material wicks sweat & dries really fast Anti-odor technology prevents the growth of odor-causing microbes Ergonomic design keeps seams off high abrasion areas & increases durability Wide, exposed elastic waistband with wordmark detail Updated gusset design provides ultimate support & comfort Drop-in Strength Pocket(TM) on right side for easy storage