Womens Under Armour UA Pro Runner 24 Split Shorts in black. Featuring a stretch mesh waistband for added breathability and a side drop-in pocket. The shorts utilize UA RUSHâ„¢ infrared technology, reflecting your body's energy to help you work harder and recover smarter. The material wicks sweat and dries quickly. Made from 77% Polyester and 23% Elastane, these shorts are machine washable. Ref: 1381877-001