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Quantity
1
Description
The Plank Firm is the best firm mattress for those seeking maximum support. This flippable all-foam design offers firm comfort on one side and ultra-firm on the other, letting you customize your sleep surface. Designed with high-quality foa...
Reviews
4.4
3.4K ratings
5
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1
Loved the firmness
Brought it for the guest bedroom for my visiting parents. They needed an extra firm bed , and this fit their exact needs. They really love the firmness. And I like it as well as we can turn it to the other side and will it will be good for anyone else to use who do not require as firm bed
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Shilpa · July 24, 2026
Very good, but hoping for a little more
I like the mattress very much. It has the firmness and support I was looking for. I've had lower back issues most of my life and I was hoping for more improvement in that regard, but we'll see. Overall, with cost considered, I think this is a very good mattress.
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Joseph · July 11, 2026
Firm but maybe not good for heavy people
We like it. I wish it had handles sewn into the side so that it can be more easily moved around. I'm 230 pounds and my side of the bed has definitely sunk in compared to my wife's side or the middle of the bed. It says the bed support 600 pounds but I guess they mean 200 in the sides and middle each. My wife really loves it and we couldn't find anything close to matching the level of firmness. We need to do a better job of rotating it or switching sides when we sleep.