Worn like a vest, the ExtremeMist Personal Cooling System generates a cloud of cooling moisture that can reportedly reduce the ambient temperature around face, neck, and upper body by up to 30º. The system consists of a 2-liter-capacity hydration backpack and a misting unit, which includes a rechargeable battery-powered pump plus connectors, hoses, clips, and nozzles. The pump is multiple speed (controlled via wireless key fob), and the system has a low-battery alert. It also comes with battery charger. Other configurations allow for connection to any hydration pack or any clean water source for use out of the pack or for cooling larger areas or groups of people.