The mattress was delivered rolled up and sealed in plastic. After she was released from the vacuum packaging, they began to expand (the final amount had reached after 48 hours). I was very surprised that she smelled neither plastic, nor for chemical despite the packaging. We could therefore leave without further ado in the room until they could be used.
I have specially still ordered me a mattress cover, because that is recommended by the manufacturer.
I was surprised how easy is this mattress! It can be conveniently carried by a person. (Even if this person has back problems.)
Nicely, I also think that the mattress cover can be removed and washed.
When you first lie down my first thought was "Oh, is that hard!" (The old mattress was a bit saggy ...). When you first wake up on this mattress, my first thought was "Oh, I slept very well!"
The sleeping comfort is much better than an innerspring mattress, and also refers to the sun air. On this mattress, I have not a bit sweaty.
The only downside: I'm a morning person morning now even worse out of bed. It is simply too good on this mattress ...