I have now ordered the 4th air mattress on Amazon and was never quite satisfied, because they began to eingen weeks losing air (despite the most careful handling and use only in my swimming pool). So this time I had decided on this somewhat higher-priced product and hoping not again to have the same problems as previously in this article. Not even close !!! After only 2 (!) Days the first hole hissed on the couch cushions for the head. It followed then gradually more leaks (interestingly, always on a straight line of about 5 cm in length. In the meantime, the head portion has 9 (!) Leakage and the large area of the body 3. I have the mattress now every 30 minutes inflate back to me then a nice "Blubber- and whistling concert" out of the holes to listen ... :-)! Would this never buy mattress again. Will they probably disposed of in the next few days. So ... once again when Luftmatrazenkauf via Amazon fooled. Pity!