Ready for any workout, the Under Armour Heatgear Armour Compression Sleeveless is the layer you put on first and take off last. It's tight to wick away sweat and quick-drying to keep you cool. No athlete can go without it. HeatGear fabric, with all the benefits of UA Compression, comfortable enough to be worn all day. Stretch-mesh underarm panels deliver strategic ventilation. UPF 30 protects your skin from the sun's harmful rays. 4-way stretch construction moves better in every direction. Material wicks sweat & dries really fast. Sleeveless. Branding on upper left chest. 84% polyester, 16% elastane. Machine wash.