This mattress has done wonders for my stiff and achy back! I now can wake up be it in the middle of the night, or morning and my body feels rested. There was a transition period of a few weeks that I wasn't sure things would work out, but I'm glad I held out. The side walls could be a bit more solid, but it holds weight pretty well when sitting on the side of the bed. If you are on the heavier side, this is Not for Tummy/Stomach sleepers. But if you are a side or back sleeper, I highly recommend!