Columbia Men's Coolhead Ball III Cap,Blue,One Size;

Built for supreme temperature regulation and sun protection in the outdoors, this performance ball cap is outfitted with UPF 50 fabrication, a wicking, cooling sweatband, and our advanced Omni-Freeze ZERO technology, which reacts with sweat to lower the temperature of the material. 91% polyester / 9% elastane Freezer Ice jersey.