Armour is the first thing you put on the last thing you take off every time you work out or compete compressionultra tight second skin fit 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 suns harmful rays 4 way stretch fabrication allows greater mobility in any direction moisture transport system wicks sweat away from the body m