I really didn't realize how much my old mattress was affecting my back and sleep quality until I got this mattress. It's firm, but not stiff like others I've tried. It's got just the right amount of give and is very supportive. My sleep quality has notably improved. My husband also sleeps better and stays asleep longer. If you're used to waking up with aches and pains or waking through the night, do yourself a favor and get this mattress.