The Koolatron Travel Saver 12 volt Cooler features a large 42.5 L (45 qt) capacity and a unique domed lid. Best of all, this cooler does not require any ice! Instead, this incredible cooler uses state-of-the art thermoelectric cooling technology. It features a durable, brushless motor and internal air circulation for even temperature distribution. This cooler is specially designed to fit larger bottles or thermoses with ease, and the rugged, durable design makes it ideal for use on the road and outdoors. Also for the times you are not on the road, just plug your Travel Saver cooler into any regular outlet, with the optional AC adapter (SKU 735306), and use it as a second fridge in your home, cottage or office. Koolatron is a global leader in thermoelectric technology and has proudly manufactured 12 volt coolers in North America for over 30 years.