Works for some, not me. Trying to return the mattress is a nightmare.
I will not dispute the quality of the mattress. It's solid. The value of the claims made about the Level Sleep mattress are definitely something I'll dispute. First off, it's firm. It's -really- firm, like an 8-8.5/10. Second, the zones didn't even approach providing (for me, anyway) what the claims said they would. It's recommended that you rotate the mattress so the "medium" firm end is up if the original direction doesn't work for you. In neither position did it work for me. I woke up in pain the entire 90 days I slept on it. This was despite a supplemental 2" memory foam topper, later replaced with a much more expensive mattress topper.
The real headache comes in trying to return the mattress. Level Sleep is actually not all that interested in your satisfaction. Initially, they'll offer you a laughable "discount" to try and get you to keep it. Ultimately, they're perfectly happy to leave dealing with the mattress in your lap. Refunding any money you've paid is then contingent upon how badly you want that money back and the ridiculous hoops you're willing to jump through to satisfy their "return" stipulations. I would -not- recommend purchasing a Level Sleep mattress solely on those grounds.