Go ahead and take long trips without worrying about your food, when you pack it in the Koolatron Traveller III Plug-In cooler, which cools and reheats! Simply plug this cooler into a 12V cigarette lighter in your car, and the state-of-the-art thermoelectric technology goes to work! Keep all your foods nice and cool while travelling long distances. Or, with the flip of a switch this cooler will turn into a warmer, and can keep your leftovers or hot drinks warm for long periods of time!