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
/pages/hsa-and-fsa-payments-1
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: 4.6726217 / 5 from 4142 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: [softness, size, instructions, smell, frame, fit, weight, firmness, support, comfort, quality, issues, material, delivery, customer service, handles, looks, feel, cover, mattress, value, box, husband, sleep, packaging, edges, wife, works, improvement, surface].
"I'm very happy with my plank firm mattress. I'be only had it a few weeks, but it's so comfortable and I'm sleeping great. Didn't realize how sagging my prior dorm mattress really was after 10 yrs until I got this one. As long as it holds up and doesn't crater, I'll be a happy customer! Well worth the money. . . and got it on the Memorial Day 30% off sale, so that was a bonus!"
"Unbelievable! We are on bed number 3 for the past 2years. I can finally have a good nights sleep. It only took 20 years of being in constant pain. Every bed swore how amazing the quality and firmness would be, yeah, never happened. We paid for the name, we paid in pain. Until our son found you!"
"This is truly a firm mattress, which is what I have been looking for. I am using the firm side, which suits me. I have not tried the medium firm side. I was kept up to date after I ordered about shipping a delivery. I did not experience any off gassing from this mattress. I would not hesitate to buy another one in the future."
"Just got the product and have only slept one night on it. It is very firm which I’m not typically used to, but I did seem to get a good nights sleep so maybe I will get used to it. I like the fact that you can flip the mattress over to get a little bit of a less firm feel. I’ll try that."
"Partner sleeps on his stomach. Couldn’t find a firm enough mattress. Couldn’t convince him to try Plank until two mattresses later. One mattress was stuffed even further on his side by manufacturer and a bear to move. Finally agreed to try ordering Plank online with tryout guarantee. One split Cal king, it’s a 10” mattress. My side is about 13” high. Solution: Invested in a 4 square split wood Cal king bunkie board (under $200) and set it up all on his side. Here we are. Bed is now even, firmly supported and quiet. He’s extremely happy. He loves the mattress!"
"I LOVE my PLANK! I was sleeping in 2 different places for a couple of months after I got married and it proved to me the Plank was the right decision. The days I slept on my old mattress was definitely impacting my hips and back. My old mat wasn’t even 3 yrs old yet and was more expensive than the Plank! I feel like I’m getting better quality sleep and I wake up with way fewer aches than before."
"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’ve waited till six months later to review this mattress to see how it held up. Unfortunately, it doesn’t hold its form and you have to turn it every two or three nights in order for it to be firm."
"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."
120 Night Trial
Limited Lifetime Warranty
Free
Shipping
Talk To A
Sleep Expert
