Visit Under Armour's eBay Shop About Seller Page Sign up For Newsletter From the Under Armour Store: Ideal for layering or wearing alone, the UA Ultra 4-Inch Compression Short really performs. Whether you’re training in the gym or at home, the UA Ultra 4-Inch Compression Short is your new go-to gear. Layer them up with a pair of running short, wear them under your game-day kilt, or sport them alone—no matter your activity and no matter your style, the UA difference is clear. Our compression