Under Armour Heatgear Flyweight Run 1/2 Zip - Men'sStay cool and conquer your running goals with the Under Armour HeatGear Flyweight 1/2-Zip. Featuring UA's HeatGear® technology and Signature Moisture Transport system, this running jacket helps you stay cool and dry in warm temperatures (ideal for weather between 75-100º). Drop tail hem provides great coverage while anti-odor technology keeps you feeling and smelling fresh. The graphics and logos provide 360º reflectivity, helping you stay seen and safe in low-light conditions. 93% polyester/7% spandex. Imported.