Wagan EL2296 10.5 Liter Personal Fridge and Warmer 10.5 liter capacity is equivalent to 12 twelve ounce cans 2 built-in cup holders, padded armrest, non-slip rubber pad, adjustable shoulder strap Cooling capacity is 35 to 40 degrees F below room temperature; can also heat up to 140 degrees F Operates via 12v DC cigarette lighter outlet in the vehicle Optional AC adapter (sold separately) is available for purchase for using this in additional places (home, office, hotel, dorm, etc.)