Armour Mesh Tank TopHeatGear is our original performance baselayerthe 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. Style #: 1373943 Body: 90% Polyester 10% Elastane Mesh: 55% Polyester 45% Elastane Imported Lightweight, smooth HeatGear fabric is ultra comfortable 4 way stretch material moves better in every direction Material wicks sweat & dries really fast Strategic