HeatGear™ slides over your body with a second-skin fit, delivering compression without restriction, making it the perfect choice for any activity, on the field or on the job. The Under Armour Fabric™ pulls perspiration off your skin, leaving the moisture on the outside of the shirt where it runs off or evaporates. The result? You’re left cool, dry, and lighter than the competition. The Compression Short is fortified HeatGear™ with sturdy yet comfortable design. Includes Under Armour's signature Moisture Transport System, flat seams, and a reinforced waistband.