The mattress was heaven at first - then became a mushy bowl. No matter how hard we try to sleep on the edge to avoid falling into the middle - we wake up stuck in the middle of the bed and have to crawl out. Very disappointing for a Simmons - which I always wanted because of its reputation. The mattress is 16 months old - and even looking at it after puting fresh sheets on - you can see that the mattress sinks to the middle. Not worth the money.