we bought this mattress as a deposit for a travel cot, but they use since mainly as "damping" before the actual bed of our daughter, if they fall out at night again. Unfortunately, I am very disappointed with the mattress. We bought it in July, they have used to travel once a travel cot and 2 nights as a mattress on the floor. Then she was back in their original cases, only since December, it is failure protection. In that short time, in which we always had a slipcover on the mattress, the foam has unfortunately become very thin, alone of a few top kneel times. In addition, the cover is torn on one edge, without that we would have (knowingly) overused.
Bottom line: If they have been rarely used and are always in a travel cot, she may reasonably do their job, not suitable for long-term use or as a pure mattress. The only good thing is that it is very easy.