Under Armour Girls Ripping Heatgear Short Sleeve polyester/ elastane Tight fit. UA Ripping HeatGear Short Sleeve battles the sun so you can stay outside longer Its also got super-cool, water-activated ink that reveals a hidden graphic when you really start to sweat. UPF 50+ protects your skin from the sun Sits close to the skin for a streamlined fit without the squeeze of compression. Signature Moisture Transport System wicks sweat to keep you dry and light