Under Armour Tech Vent T-Shirt in Pink. When you??re pushing your limits in the gym, you need gear that can keep up. Enter Under Armour with this short-sleeve powerhouse, designed with ample ventilation and crafted from a lightweight, highly breathable knit fabric. Made from 4-way stretch polyester, it moves with you in every direction, wicks away sweat, and dries quickly, ensuring you stay cool and comfortable throughout your workout. Featuring a dropped, shaped hem for extra coverage and a contrast Under Armour logo on the left chest and back of the neck.