This air bed is very comfortable, both I, and the guests were very happy with it. Add to that the ease of use. But then, what was that? Duly inflated and the next morning one of my guests was lying on the floor. At first I thought: "Well good, maybe I had made a mistake and it may not be rotated the wheel at the pump properly (although there is not much to go wrong)." None, as I took this bed in order to stay with a buddy can even I was lying on the floor. In vain I searched the hole in the mattress, but there was none. The air rushed out of the integrated electrical pump, because the wheel could stand where it wanted. All this, even though I was always at pains to always follow the advice, the guidance. The first incident counting, that is, after a whopping used three times, the thing was then to use only for the trash. So comfortable and wonderfully balanced one it can also sleep (provided that the air stays where it should be), I find it to me incompatible to honor such a negative effect with more than one star.