HeatGear is our original performance baselayer—the one you put on first and take off last. Our original HeatGear fabric is super-light, breathable & dries fast Material wicks sweat & dries really fast 4-way stretch material moves better in every direction Updated gusset shape & ergonomic flatlock seams deliver a comfortable, chafe-free fit Exposed elastic waistband with wordmark detail Odor control technology minimizes odor Compression: Ultra-tight, second-skin fit.