I always had the feeling I was sinking in the middle of the mattress. Yesterday I unzipped the cover and discovered the entire layers of different foam materials were pieced together of 2x70 cm and not one continuous piece of 140 cm as expected!!! This is &Betrug&. I would like an immediate replacement. I would like to send pictures so you can see for yourselves. The mattress is less than 5 years old and has only been used occasionally.