The Columbia PFG Zero Rules Short-Sleeve Shirt pairs technical performance with feminine, street-friendly style. Ultra-comfy 92% polyester, 8% elastane Softie Stretch jersey fabric boasts industry-leading Omni-Freeze ZERO technology, which reacts with your sweat to provide instant and prolonged cooling. Omni-Wick technology pulls moisture away from the body so sweat can evaporate quickly, while Omni-Shade UPF 50 sun protection shields your skin against harmful UV rays. An antimicrobial finish helps reduce odors, so you stay fresher longer. The wide scoop-neck collar and pretty shirring detail at each shoulder ensure a flattering, feminine fit. Active fit. Imported.