The best firm queen mattress I got. Firm as exactly needed, more than a medium firm. Expanded in just a couple of hours, but I just left it alone until 3 days later to use. I ordered a second a week after that. It was the same as last one. I will come back a year later to let you know what will happen. The picture is the first one that expanded in just 1,2 hours and you can already sleep on it.