The Columbia Men's PFG Freezer Polo Shirt is engineered for performance in warm to hot environments. Omni-Shade UPF 40 technology helps protect covered areas from harmful UVA and UVB rays through specialized fabric construction. This fabric is recommended by the Skin Cancer Foundation as an effective UV protectant for covered areas only. Omni-Freeze technology enhances cooling comfort by accelerating moisture evaporation at the surface. Omni-Wick performance fabric keeps you dry by pulling sweat away from the skin and promoting rapid drying. A ribbed collar completes the design with a functional, clean finish.