Under Armour Heatgear Mens Compression Vest - White The first thing you put on and the last thing you take off, Under Armour keeps your training sessions cool with this ultra-tight white baselayer vest. Worn as a second skin, the HeatGear® fabric delivers performance without the weight. The Moisture Transport System wicks sweat away from the body, whilst anti-odour technology prevents the growth of unwanted microbes. The sleeveless design allows excellent mobility in any direction, while Under Armour branding is positioned at the front and rear.