Two main reasons, the smell is disgusting. After opening (after about 12 hours) and the first inflation I was forced this "splendor bed" four (!) To leave to the smell to get rid of days in the hallway. Even in unused condition escapes every day air. Incredible! Even today, after about a week the smell is disgusting and prepares headache. A: Odor B: keeps air not (What guarantees is due to an inferior valve and not on the mounting) Had me the effort of returning not too high, I would return it. The question remains open, this type beds are the higher priced even better? I have no more desire to try it out. Addendum: The part is now moved in the trash !! A star is too much!