Alpicool KCF15 Portable Fridge Freezer

The size of the box (more tallness, than width) is helping if your trunk is not giant and you still want to transport other stuff.

The inner hight is just enough * for a 1.25 liter German Pepsi-bottle or the majority of wine bottles (* with a little pressure, the lid just closes).

Really bad in my point of view is the missing connection cable for the electrical power grid (only one connection for a car's 12 volt power supply comes with the box).

If the manufacturer would provide with the box such a cable it would be much cheaper than buying it additionally by yourself.

So, the box might be five to ten EURs cheaper in selling price.
But obtaining a grid connection which is in minimum helpful up to normally necessary counteract easily such savings.