Hexdelta Short SleeveUA CoolSwitch uses an exclusive coating on the inside that pulls heat away from your skin, making you actually feel cool & able to perform longer. Super light HeatGear fabric delivers superior coverage without weighing you down. Signature Moisture Transport System wicks sweat to keep you dry & light. Crossover back design. Scoop neck with slight drop tail hem. Mesh side paneling for extra ventilation. Large sleeve opening for extra mobility & range.