You'll be all set for your next beach day with the family or camping trip with friends thanks to this Koolatron Travel Saver cooler. It uses thermoelectric technology via a 12V DC power supply to keep your food and drinks either cool or warm. With a unique domed lid, it can fit larger bottles and thermoses, making it perfect for camping, barbecues, picnics, and more. | Koolatron 12V Electric Cooler/Warmer 42L (45 Qt) Two-Way Design - Grey