Under Armour Men's HeatGear Armour CoolSwitch Supervent &frac34; Leggings 100% Other Fibers Imported UA CoolSwitch uses an exclusive coating on the inside that pulls heat away from your skin, so you actually feel cooler Mesh HeatGear fabric, with all the benefits of UA Compression, delivers total ventilation Breathable ArmourVent mesh side panels are ultra-durable & delivers superior ventilation 4-way stretch construction moves better in every direction Material wicks sweat & dries really fast