Under Armour HeatGear long sleeve performance shirt provides a fitted silhouette designed for high-intensity training and athletic activities. This seamless knit top features a blue space-dye or heathered pattern with moisture-wicking properties to keep you cool and dry. The lightweight, breathable fabric includes a classic crew neck and the iconic UA logo on the chest and back neck, along with vertical branding along the sleeve. Perfect for gym sessions, running, or as a base layer for outdoor sports.