It is an old model or a product that we can no longer order at the manufacturer.
The Coolhead II Ball Cap, unisex, from Columbia will effectively protect your head from the sun's rays during your hikes, or daily activities, thanks to the Omni-Shade UPF 50 technology. Even under high temperatures and scorching sun, the mesh band Omni-Wick of the Columbia cap will keep your head ventilated while wicking away sweat. The Coolhead II Ball Cap is equipped with Omni-FREEZE ZERO™ technology. The small blue circles of Omni-FREEZE ZERO™ interact with your head. They react to sweat and lower the fabric's temperature to keep your head cool.
Superb cap, keeps my head cool all day...