I was looking for a flat hard mattress and went with this one. It's an okayish mattress but it DOESN'T work. The main reason is that this comes in a box, so when it is unboxed it is not guaranteed to work as expected. Lesson learned: never buy a mattress in a box.

Reason 2: it went down after a few days of using it (again I would blame it on it being in a box). My recommendation to you if you're looking for a hard mattress is to try a local mattress company and ask them for one.