My wife has had multiple back surgeries and struggles to find a comfortable mattress. We bought this back in January and have been loving it. They have a medium option and a firm option. We went with the medium, and it's softer than we expected from reading the reviews, but it still provides good support for my wife's back and she sleeps great. I could sleep on concrete and be just fine, so it goes without saying I've been sleeping great on it as well.