WHAT'S IT DO? Ideal for layering or wearing alone, the Women's UA Ultra 4" Compression Shorts really perform. Layer them up with a pair of running shorts, under your game-day kilt, or sport them alone. Our compression fit increases muscle efficiency and lessens fatigue, so you can practice longer, without worrying about working up a sweat. The UA Ultra 4" Compression Shorts wick it away to keep you cool, dry, and comfortable no matter what you're up against.