Going out and leaving everything in the training gym is for you, the Men's Under Armour MK-1 T-Shirt has the optimal fabric to complete the routines on any day of the week and has an aerodynamic design to reduce the volume of the garment accompanying you to gain muscle.  Breathability for your body. The HeatGear fabric is super light to move with your full potential, this men's Under Armour sports t-shirt has mesh panels on the back to ventilate your skin during training and has material that absorbs sweat from the body, adwelled with anti-odor technology to prevent the growth of bacteria.