Under Armour Men's UA HeatGear ArmourVent Compression Leggings Medium Black 84% polyester,16% elastane Imported Stay cool and composed in the heat of the game with the Under Armour Men's HeatGear ArmourVent Compression Leggings. These bottoms offer a second-skin fit to keep your muscles fresh and recovery time fast. ArmourVent mesh panels provide extreme breathability and optimal durability to keep you going in the warmest temperatures. With stretchy, quick-dry materials, these UA tights are prepared to build your speed and stamina.