On vacation, I woke up in the middle of the night because the previously bulging sleeping pad has left so much air that I was with the pelvis and shoulder on the hard ground. I have your mattress every night then 2 to 3 times inflated.
The cause of the air loss, I have found a very small leakage below the valve connection. At such a vaulted passage to which you do not get stuck tidy the supplied adhesive strips.
Became aware of this lack, I have found that on another mat (of 4 pieces) present exactly the same error.
The two remaining cruise MP mats we are very satisfied. Comfort is of course mediocrity but pack size and weight are for this price Topp!