HeatGear® 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. 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;High-rise UA No-Slip Waistband for optimal coverage & support that stays put with every move you make;Side drop-in pocket