My coolbox, an Igloo from Lakeland, goes down as the best accesory purchase I have ever made. In France in the summer my wife and I tended to argue over fridge space. She wanted to waste it with stuff like food whereas I took the sensible approach and filled it with wines and beers. In the end she won (women have this knack, have you noticed?) and so I had to find another solution to the warm beer problem. I didn't think that these devices worked but I bought one anyway. It was the biggest one I could find and cost me just over