With us after about 20 nights (for use in caravans) has occurred a defect. The bed is kept by internal cords in shape. First, a cord, and then another is broken. Thus we had at this point any level surface more but a balloon.
We think that the mat is suitable for all those who want a few times a year to sleep on it. For probably not frequent users.
Amazon has withdrawn the goods after half a year without hesitation and refunded the price. As always, great service.