Under Armour Imminent Half-Zip Long Sleeve Running Top Lightweight Knit - Help body breathes so you wont overheat on the run. 4-Way Stretch Fabrication - Allows greater mobility and maintains shape. Signature Moisture Transport System - Wicks sweat away from the body, keeping you cooler and drier. Anti-Odour Technology - Prevents the growth of odour causing microbes. Reflective Element - For keeping you safe in low light conditions.