I am not a person who writes reviews, but I had to write one about this mattress. Like many people, I was worried about buying a mattress online, but I took the plunge. The Slumber Solutions mattress is absolutely perfect! I ordered the queen, medium firmness, after going back and forth between soft and medium. I'm VERY glad I ordered the medium, because it is a little on the soft side. I unwrapped the mattress and it went to its full size in just a few minutes. There was no oder at all. I waited 36 hours before sleeping on it. I have slept on it with a thick and fluffy mattress pad and without anything but sheets and both ways are perfectly comfortable. Trust me, you cannot go wrong with this mattress.