Very happy with the purchase.  The mattress was easy to place on the bed frame and rapidly expanded.  We were able to sleep on it that night as there was no strong smell.  The first night it was a bit soft but after the 24 hours it reached a perfect firmness for us.  I am a stomach sleeper and my husband is a back sleep and we both are very happy.  We have been sleeping on it for a week with no body aches or pains.