The Under Armour Tech Short Sleeve T-Shirt for Men is the ultimate sweat-wicking training T with just the right amount of stretch. This tee is built with technology that makes you better, from serious cross training to hard gym workouts. It's lightweight and it wicks sweat fast so you're never weighed down. But to totally crush the standard for a great T-shirt, the HeatGear fabric also gives you unparalleled stretch and flexibility.