Originally wanted to film for test sleep dranlassen.Das but goes bad because it's incredibly loud at the slightest movement. So settled sheet and no longer risked to convert. Contrary to comments with respect. Hard as a board I can give my feelings to clear. But this is subjective and everyone feels anders.Habe no slat only strips, not rust. 1.Nacht slept like a log. I had bought H3 at 86kg. Only negative experience felt very warm.Evtl mattress. I'm old refer. Especially pleasant I found the mattress lying on side. Here truly worth 5 stars.