Mizuno Cooling Inner Wet and Layerable Hat for Heatwave Free Size Cap, Cool, Protection, Junior, C2JWC101, White/Ice Gray,

Soak it in water for a cool, refreshing feel! The bottle cap on the inside of the hat features a cool hold function. An inner cap with a flap that can be worn inside your regular hat The hanging part is made of cool, smooth material with UV protection and a cooling sensation.