Fitted with a 12V car adaptor, the Connabride Tristar 21 litre 12V Powered Coolbox can keep it's contents chilled by up to 16oC below ambient temperature (i.e. inside it will be 4oC on a 20oC day)._ There is space for two individual 2 Litre drinks bottles to be stored upright, and you'll still have lots of room for the rest of your picnic._ When plugged in the motor and fan are very quiet, so it won't disturb your siesta either.Dimensions (approx.): W39 x D25 x H40cm