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._• Our original HeatGear fabric is super-light, breathable and dries fast_• Material wicks sweat & dries really fast_• 4-way stretch material moves better in every direction_• Ergonomic flatlock seams deliver a comfortable, chafe-free fit_• Exposed elastic waistband with wordmark detail_• Odor control technology minimizes odor