Also, I have unfortunately had to find that one can search in vain for a hole in the mattress. 2 times I was looking for my happiness with such a mattress and both times I was disappointed. For me it is clear that I would rather invest a little more money and then - not filled with air - have spare bed, in which the morning does not wake on the floor and part of the mattress (which is still filled with air) pushes me in the face (or my guests) .......