This Under Armour Men's HeatGear Armour Long Sleeve Shirt is designed for men who love to work out. It's great for the gym, running, or any other physical activity. The shirt has a slim fit. The super-light HeatGear fabric provides excellent coverage without weighing you down. It features mesh underarm and back panels for ventilation. The material wicks sweat quickly and dries fast. With anti-odor technology, it stays fresh. The ergonomic design keeps seams away from high abrasion areas for durability. The hybrid raglan sleeve construction offers added range of motion and comfort. Machine wash cold with like colors, use non-chlorine bleach when needed, tumble dry low, do not iron, do not use softeners, and do not dry clean.