This Under Armour long sleeve shirt is perfect for men who are active in the gym or supporting health causes. You can wear it alone during workouts or under a uniform for comfort. It has a slim fit. The super - light HeatGear fabric doesn't weigh you down, and there are mesh panels in the underarm and back for ventilation. The material wicks sweat quickly and has UPF 30 protection. It also has anti - odor technology. Machine wash it cold with like colors and tumble dry on low.