Under Armour Men's UA MK-1 Short Sleeve Shirt give you the moisture wicking and freshness technology to keep you cool during your workouts. This training shirt is built with HeatGear® fabric that is ultra-soft and smooth for extreme comfort with very little weight. Its streamlined fit is not too tight or too loose which makes it super comfortable while the four-way stretch construction moves better in every direction. The UA MK-1 shirt features anti-odor technology that prevents the growth of odor-causing microbes as well as a mesh back and underarm panels that deliver strategic ventilation. Get the best training gear ever with the Under Armour Men's UA MK-1 Short Sleeve Shirt!