HeatGear® is the original performance baselayer—the one you put on first and take off last. So UA made it extra comfortable by wicking sweat and stretching so you can move. No athlete can go without it.. Features:. Super-smooth, double-layer HeatGear® fabric delivers superior next-to-skin feel. Material wicks sweat & dries really fast & light. 4-way stretch material moves better in every direction. Crossover straps with updated keyhole detail for easier on/off. Elastic band with wordmark detail feels super-smooth & soft. Double-lined for coverage, no padding. 87% Polyester/13% Elastane. Fitted: Streamlined fit that’s not too tight or too loose.. Care:. Machine wash cold with like colours. Do not bleach. Tumble dry low. Do not iron. Do not use softeners. Do not dry clean