12 volt thermoelectric cooler plugs into all 12V cigarette lighters. The Kool Sport comes with an easy-to-cary adjustable shoulder strap and holds up to 12 cans. ( 7 Liter ) This great portable electric cooler can be taken anywhere. The cooler has a soft nylon exterior and is lined with aluminum foil laminated polyurethane foam sheets. Side storage pouch, long life brushless motor. Measures 15 x 8 x 12 PERFECT FOR: Lunch in the park Road Trips No need to stop for cold drinks No messy melted ice to spill No more wasted food No more soggy sandwiches No more warm drinks on a hot day.