Published by at 03/08/2026 The Under Armour Women's Heat Gear Long Sleeve Performance Top in black is a high-quality activewear top designed for women who are into gym training, cross-training, or running. Made from 100% polyester material, this semi-fitted top features a crew neck and long sleeves for added comfort and style. The slim fit and lined interior ensure a snug and supportive feel during intense workouts. With the Under Armour HeatGear product line, you can trust that this top will perform well and withstand your active lifestyle.