The Under Armour Heat Gear Full T-Shirt is constructed of lightweight, quick-drying microfiber which expands, allowing moisture to bead off your body as you sweat. UnderArmour Heat Gear slides over your body with a second-skin fit, delivering compression without restriction, making it the perfect choice for any activity. UnderArmour is great for football, baseball, lacrosse, running, walking, hockey, soccer, basketball and all fitness activities