The soft immersion is (100 Kg) was a bit unusual for me, but for now 2 weeks I got used to it. My wife no longer wants to get out of bed and sleeps like a log.
A positive side effect is that we have both the snoring not set, but could significantly reduce it. I guess that is held by dipping the neck in an advantageous position.
I like to sleep on the side. The pain in his shoulders were significantly reduced. The material reacts so sensitively that even the ankle of the foot sinks.
For people who want to sleep very hard, it could however be used to. This is but the material itself. Because you really "sinks", movements are more difficult. Less suitable for acrobatics in bed So :-)
Smell?
No, we have found nothing. After unpacking the Topper takes a few hours until it reaches its full size.
All in all very comfortable. We did not regret it.