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-soft pinhole mesh delivers superior breathability without sacrificing coverage Material wicks sweat & dries really fast 4-way stretch material moves better in every direction Rolled forward flatlock seams deliver a comfortable, chafe-free fit Shaped drop-tail hem offers superior back coverage 94% polyester/6% elastane