The Firmest All-Foam Mattress
Ships in 3-7 business days
The Firmest All-Foam Mattress
Limited Lifetime Warranty
120 Night Trial
Free Shipping
10" Tall, Flippable, All-Foam Design
12" Tall, Flippable, Hybrid Design with Extra Firm Coils
HSA/FSA eligible for qualified customers
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Experience a new level of sleep quality with mattresses that are specifically designed to offer the firmest support on the market.
No Support
Multiple layers of high density supportive foam and edge to edge support
Back Pain
Endorsed by the American Chiropractic Association for it's firm benefits
Sleeping Hot
Breathable materials with cooling gel and GlacioTex™ Cooling Cover
Limited Comfort Options
Flippable mattresses with 2 comfort options (firm or extra-firm)
The Firmest All-Foam Mattress
The Firmest Hybrid Mattress
120-Night Trial
We are committed to helping you find your perfect mattress. Enjoy our 120-night comfort trial to see if our mattress is right for you.
Free Shipping and a Limited Lifetime Warranty
Free shipping is always standard with your mattress order. Rest easy with our limited lifetime warranty.
Bed-In-A-Box Delivery
We deliver your mattress in a box, shipped directly to your door. Set-up is easy: click here to see the best way ever to open and decompress your mattress.
Overall rating: 4.674193 / 5 from 4119 reviews.
The Plank Firm mattress is highly praised for its excellent support, quality, and sleep experience. Customers appreciate its firmness and the reduction in back pain, though some find the side too soft. Delivery is reported to be fast and efficient.
Review topics: ["size","height","thickness","firmness","weight","comfort","frame","pain","instructions","fit","temperature","pillow","support","fabric","durability","back pain","dreams","softness","feel","regrets","quality","edges","shape","smell","surface","base","delivery","tossing","husband","material"].
"I actually cant believe how nice this matress is. Its so solid with the teeniest bit of give for a comfortable lay. I dont even use pillows anymore most times. I will never use memory foam again. They have absolutely wrecked my back. We will slowly start to bring Plank matress into the rest of the rooms of the house. I took advantage of the spring deal. Should have bought all three rooms one. If you like firm this is the one."
"I recently purchased the Queen size Plank mattress when deciding to upgrade to a larger bed. This is my second Plank mattress and it's as amazing as the first one I purchased (which is still in excellent condition - no sagging or breakdown after using it for 5 years. ) I like a firmer mattress, and this one is the perfect amount of firm support. Shipping was quick - it arrived in about a week, which coincided well with when the bed frame arrived. I can't recommend Plank enough."
"The mattress felt firm at first, but after only a month, it has already begun to feel softer in the middle. The center no longer provides the kind of support I was seeking, and I find myself inching closer to the edges just to stay comfortable. This kind of premature softening is concerning and not what I expected from a firm mattress."
"Had our mattress now 3 weeks and it is very comfortable for my husband and I. The firmness is perfect for his back and as a stomach/side sleeper it is also comfortable for me. We did pay extra for the cooling mattress protecter which actually does feel nice as we approach summer. Setup was fine (came vacuum sealed all rolled up) and we opened it on the bed frame. We did let it sit for a day before we slept on it."
"I bought this mattress for my husband due to his chronic back pain. He absolutely loves it and we are plank customers for life. His back pain is so much better and he is much more energized. Highly recommend this mattress."
"I love my bed so far. I need something that's really firm. And this definitely checks that box. I'd recommend getting this bad if you're kneading a firm bad now I just need to know how long it's gonna hold up. Then I'll really have a review"
"Love it! This is the third Plank mattress that I bought. The first we bought for my brother-in-law who has a bad back, he says his back feels much better now. We bought one for my son because it has two sides (firm and less firm) so you get a choice of firmness plus twice the use, just flip it over when one side starts to wear out. He uses a foam topper to make it extra comfy. Now we bought this third Plank mattress for us. I like that you can order it online and it gets delivered compressed in a box (easy to get thru a doorway). In compressed state, we were able to set it off to the side until we were ready to use it, then when you unroll it, it re-inflates to full size - convenient! All three of us use a tall metal frame with horizontal support slats - no need for box spring"
"Great. . . very happy. I needed a mattress that had firm sides and corners so that I could enter and exit without falling and yet didn't feel like I was sleeping on a piece of plywood. The Firm Plank model on its "softer" side has fulfilled my safety and comfort needs. . . and I'm primarily a "side" sleeper. (Mike)"
"I am EXTREMELY happy I decided to buy this mattress! I haven’t bought a mattress for several years and love a firm mattress, so I gave Plank a try. They deliver exactly what they say, a very firm and comfortable mattress that has changed the quality of my sleep in a fantastic way! I HIGHLY recommend this mattress to all firm/extra firm mattress fans."
"Love my new Plank Mattress! The box it came in was heavy and took to people to move, but otherwise it was very easy to set up. Most importantly, I am sleeping SO much better! It is just the right amount of firmness while still being very comfortable."
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