The Evaporative Cooling Brimmed Hat
This is the hat that uses evaporation to keep your head up to 30º F cooler than outside air temperature. The hat works by first running it under cool water and shaking off the excess. Its 100% polyester microfiber suede conducts body heat outward, while retaining the cool water and releasing it slowly through evaporation, cooling your head. Its ventilated crown also provides cooling.