The mattress smells indeed something chemically, who's sensitive, as I should remember that. I have to respect gleichmal down and washed, now the smell is gone. Stripping was pretty easy, obtaining material is a result somewhat more difficult, but it works. The indication in the article description "not tightened", does not apply to my terms, on one side is a zipper available which can also be seen on the product image.
On the whole, I am quite happy after the first night. The product is basically the same product description, merely as a seat is probably only suitable for children. That was me but before buying clear and for me is also not relevant. For the somewhat unpleasant smell there's a point deduction.