A game changer! Imperial powered by Coolcore buckets are the only patented, chemical-free golf buckets on the market. The moisture activated cooling technology will have you feeling cool when the heat is on. So let sweat work for you, or you can add water to accelerate the cooling effect! 100% polyester woven mini canvas with 3D honey comb poly mesh side panels Adjustable chin-strap with additional bungee adjuster on back of crown Fabric cools up to 30% cooler than skin temperature when wet Wicks and transports moisture, then regulates evaporation for cooling effect.