HeatGear 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 athlete can go without it. Super-light HeatGear fabric delivers superior coverage without weighing you down. Material wicks sweat & dries really fast. 4-way stretch material moves better in every direction. Ergonomic flatlock seams deliver a comfortable, chafe-free fit. Super-soft jacquard elastic waistband with a rise that sits just right on your hips.