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Plank Firm

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 foam layers in Arizona, it delivers the uncompromising support firm sleepers demand.

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Plank Firm
  • Plank Firm
  • Plank Firm
  • Plank Firm
  • Plank Firm
  • Plank Firm
  • Plank Firm
  • Plank Firm
  • Plank Firm
  • Plank Firm
  • Plank Firm
  • Plank Firm
Plank Firm

Ships in 2-5 business days

Plank Firm

The Firmest All-Foam Mattress

$749.00 $561.75

We strive to bring you the lowest prices. The strike-through or reference price indicates the Product’s suggested retail price (SRP) and may not have been offered by us or other retailers at that price in the past and may not be offered for sale at that price on any future date. Thus, the strike-through price may not necessarily be the prevailing market price, regular retail price, or former price of a Product. In addition, Products may be offered by us or other retailers at the same or lower prices during future promotional events beginning on or after the last day of any advertised promotion. See Details

<p>Limited Lifetime Warranty</p>

Limited Lifetime Warranty

<p>120 Night Trial</p>

120 Night Trial

<p>Free Shipping </p>

Free Shipping

Plank Firm

Plank Firm

10" Tall, Flippable, All-Foam Design

Plank Firm Luxe

Plank Firm Luxe

12" Tall, Flippable, Hybrid Design with Extra Firm Coils

HSA/FSA eligible for qualified customers

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Plank Firm Supportive Benefits

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Firmly ACA Endorsed
The American Chiropractic Association (ACA) concluded that the mattress’s firm support reduces spinal stress, improves lumbar support, and alleviates back pain 

Firmest Mattress on the Market 
Never feel your back dip and never opt for the floor again. The extra firm support (a ten on the firmness scale) will keep you firmly supported all night long

Flippable All-Foam 
If your extra firm mattress feels too firm, simply flip the mattress to achieve a medium-firm feel. Flip for firm or firmest—the choice is yours. (Plus, the flippable design improves the longevity of the mattress.) 

Time-honored Sleep Design 
Our firm design is borrowed from the wisdom of the ancients who slept on firm pads or tatami mats. Our design offers all the benefits of these time-honored traditions while providing a more modern look

More than Just Supportive, Made to Restore You

High Density Foams 
Our foams are thick and dense (and made with the highest quality materials!) to give you firm support while soothing hips and shoulders for long-lasting and restorative sleep 

Breathable Materials
Fall sleep and stay asleep with the ideal temperature from foams that sport open cell technology to wick away excess body heat. Breathe easy and deep while enjoying naturally cooling sleep

Perfect Spinal Alignment
Feel aches and pains melt away thanks to the superior spinal alignment found in our oh-so-supportive foam layers. Each foam layer is carefully crafted and placed to give you support where you need it most 

Upgrade to Ultra Cool 
Hot sleepers and sleep partners find relief with our optional GlacioTex™ Cooling Cover. This cool-to-the-touch design offers instant cooling to banish heat and restore long-lasting cool sleep

How Does it Feel

Firm

Soft Firm
Best For
Back Pain
Back Pain
Back Sleepers
Back Sleepers
Stomach Sleepers
Stomach Sleepers
Extra-Firm All Foam
Extra-Firm All Foam

Extra Firm

Soft Firm
Best For
Back Pain
Back Pain
Back Sleepers
Back Sleepers
Stomach Sleepers
Stomach Sleepers
Extra-Firm All Foam
Extra-Firm All Foam

Built for Better Sleep

Plank Firm
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Optional: GlacioTex™ Cooling Cover (Extra Firm Side)

Upgrade and enjoy cooling on contact for a never too hot, never too cold sleep experience, night after night

.75” Quilted Top

Sports track-and-jump stitching to ensure a minimal loft for a traditionally firm feel

6” High-Density Base Foam

Our firmest support foam with the added benefit of deep compression support

2” Supreme Response Comfort Foam

Crafted to be firm with enough contouring for a firm feel

.75” Quilted Bottom

Sports track-and-jump stitching to ensure a minimal loft for a traditionally firm feel

Optional: GlacioTex™ Cooling Cover (Firm Side)

Upgrade and enjoy cooling on contact for a never too hot, never too cold sleep experience, night after night

Industry Reviews

Sleep Foundation

Sleep Foundation names Brooklyn Bedding Plank Firm Mattress the Best Extra Firm Mattress in The Best Firm Mattress of 2026 roundup

Sleep Foundation
NapLab

NapLab Sleep Experts name Brooklyn Bedding Plank Firm Mattress the Best Firm Mattress in the 12 Best Mattresses of 2026

NapLab
Wired

Wired names the Brooklyn Bedding Plank Firm Luxe the Best Firm Mattress for Back Pain in Wired Best Mattresses of 2026

Wired

Upgrade to Plank Firm Luxe

Plank Firm

The Firmest All-Foam Mattress

Plank Firm

Price Details (Before Discount):

Twin - $749
Twin XL - $849
Full - $999
Queen - $1,332
King - $1,532
Cal King - $1,532

Construction:

10” Tall, 4 Layers

Support:

6” high-density base foam core

Comfort:

Quilted top weave with high-density base foam and Supreme Response Comfort Foam

Warranty:

Limited Lifetime Warranty

Plank Firm Luxe

The Firmest Hybrid Mattress

Plank Firm Luxe

Price Details (Before Discount):

Twin - $1,065
Twin XL - $1,198
Full - $1,465
Queen - $1,598
King - $1,865
Cal King - $1,865

Construction:

13” Tall, 6 Layers

Support:

6” individually encased Ascension Firm coils

Comfort:

Quilted top weave with high-density support foam, Supreme Response Comfort Foam and a core of 6" individually encased ascension firm coils

Warranty:

Limited Lifetime Warranty
Upgrade to Plank Firm Luxe
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What To Expect

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.

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Frequently Asked Questions

How firm is the Plank Firm Mattress by Brooklyn Bedding?

On a scale of 1 to 10, the firm side of the Plank Firm mattress ranges between 7.5-9. This ranking is slightly above a traditional firm mattress. The ultra-firm side ranges between 9.5-10.5 — meaning it’s the firmest, flattest sleep surface on the market. To put that in perspective, next level firmness could only be achieved by sleeping directly on the floor with no pressure point relief.

Is it possible to make the Plank Firm Mattress by Brooklyn Bedding firmer?

The flippable design of the Plank Firm mattress allows you to choose your ideal firmness level. A .75” quilted top layer, patterned with continuous stitching, ensures zero loft for an ultra-firm sleep experience. Or, flip the mattress, and a .75” quilted layer, patterned with tack-and-jump stitching, creates minimal loft for a firm sleep experience. Next level firmness can be achieved by eliminating the mattress altogether and sleeping directly on the floor. You will, however, lose some of the pressure point relief that comes with sleeping on an actual mattress.

What differentiates the Plank Firm from the Plank Firm Luxe by Brooklyn Bedding?

The Plank Firm by Brooklyn Bedding is an all-foam mattress—and the firmest sleep experience on the market. (Next level firmness could only be achieved by eliminating the mattress altogether and sleeping directly on the floor.) Meanwhile, the Plank Firm Luxe by Brooklyn Bedding is constructed with added foam layers and individually encased coils to deliver greater pressure point relief and responsiveness. Both mattresses are flippable, which allows you to choose between a firm and extra-firm side. Many customers with a sleep partner do opt for the Plank Firm Luxe to ensure a more comfortable sleep experience for both individuals.

What cooling features are available in the Plank Firm Mattress?

The Plank Firm features a breathable quilted top on either side of the mattress, coupled with open cell technology throughout the foam layers, to help ensure a neutral temperature environment.

For even greater temperature moderation, a GlacioTex™ Cooling Cover can be sewn into the Plank Firm mattress as an optional feature—just look for the "Add Glaciotex™ Cooling Cover” option on the right side of the product page when making your selection. Once you add this feature to your mattress, the cooling top panel will be sewn into the surface of the mattress to deliver ultimate cooling on contact

The GlacioTex™ Cooling Cover is an optional feature that does not impact the comfort, firmness level, or support of the Plank Firm mattress.

What is the height of the Plank Firm Mattress by Brooklyn Bedding?

The height of the Plank Firm mattress is 10”. An illustration of the mattress with details for each layer is found on the product page, along with a full product description.

How much does the Plank Firm weigh and what are it's dimensions?

The weight of the mattress and its dimensions vary by selection. The Plank Firm mattress weighs between 60-105 pounds. Dimensions for mattress sizes can be found in the graphic here:

How much weight will the mattress support?

All Brooklyn Bedding mattresses are designed to support up to 950 pounds. If you or your sleep partner weigh more than 300 pounds—and prefer more substantial support—you can check out the Titan Plus Mattress by Brooklyn Bedding here.

What type of foundation works best for this mattress?

Brooklyn Bedding mattresses are designed to be used on foundations with solid support with minimal to no flex. This includes slatted wood or metal foundations with slats no more than 4" apart, wood or metal box foundations, and solid wood or metal platforms. If you need a foundation for your new mattress, check out our foundations specifically designed for Brooklyn Bedding mattresses here.

Are your Plank Mattresses flippable?

The Plank Firm and Plank Firm Luxe mattresses are designed with varying firmness levels on either side of the mattress and can be flipped to customize your sleep experience.

What is the 120-night comfort trial?

If during your 120-night sleep trial (which begins once you receive your new mattress), you decide that you are not completely happy with your mattress and wish to return it, we will help dispose of your mattress and help you begin your return. 

Please allow 30 days to laps from the date of delivery before beginning the return process.

Customers are able to make use of this 120-night comfort trial on one occasion. The second occasion is not eligible for a return.

Please note: there is a $99 return fee for all mattress returns to cover the cost of picking up your mattress. We do our very best to donate, recycle, or otherwise repurpose all returned mattresses. 

Please contact us at support@brooklynbedding.com with “Return Request” in the subject line, and we will respond quickly to process your request.

Please Note: No returns or exchanges will be offered on clearance items.

Where is this product made?

This product is made in America using foreign and domestic components.

Do your mattresses have any safety certifications?

Every Brooklyn Bedding mattress is assembled in our Arizona facility, allowing us to ensure the highest quality every single time. Our mattresses are GREENGUARD Gold Certified and made with CertiPUR-US certified foams, which guarantees they are made without any harmful chemicals including ozone depleters, PBDE flame retardants, mercury, lead, heavy metals, formaldehyde, and have extremely low impact on indoor air quality.
See All FaQs
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Built For America’s Dreams

Everyone deserves an affordable, high-quality sleep solution. That is why we have spent decades perfecting our craft by sourcing top-of-the-line materials, improving our techniques, and striving for innovation in our Arizona Factory. Watch the video to learn more about how your mattress is made.

Complete Your Sleep Experience

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  • Sheets

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    Enhance your comfort with our super soft and breathable sheets.
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    Pillows

    Upgrade your sleep with pillows that offer the ultimate contouring and support.
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  • Foundations

    Foundations

    Find Simple And Intuitive Solutions For Superior Support.
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Overall rating: 4.794773 / 5 from 2602 reviews.

AI Generated Review Summary

The Plank Firm is highly recommended by customers for its excellent firmness, quality, and support. While it provides great comfort and quick delivery, opinions on back pain relief are mixed.

Summary topics

  • Plank Recommendation: 6%
  • Firmness: 13%
  • Quality: 5%
  • Sleep Comfort: 13%
  • Support: 6%

Review topics: ["fabric","comfort","support","firmness","quality","height","edges","issues","thickness","material","looks","mattress","feel","packaging","construction","website","delivery","customer service","value","handles","cover","surface","foam","set","improvement","upgrade","plastic","gift","guests","box"].

Review highlights

  • "Swift arrival, nice packaging I like the softer side Lightweight, clean and fresh Comfy sleep" — Zoe E.
  • "We bought the firmest mattress plank offers and we love the support and firmness that it gives." — Estelle D.
  • "High quality and shipping was quick and painless." — K B.

Reviews

Only had it a few

"Only had it a few weeks but I can definitely tell the difference from previous mattresses I’ve had including brands Serta, Purple, and Nectar. I wanted the most firm and I’m pleased so far. Right out of the box there was no weird smell and it was ready to use immediately."

— Danielle H. (5/5)

This mattress helps a lot

"This mattress helps a lot with back pain. I was sleeping on the ground but I didn’t want to stay there forever. So I purchased this one and things are great!"

— Scott B. (5/5)

Seems to sag a bit

"Seems to sag a bit in the middle. Have solid base under mattress."

— Michael T. (3/5)

I had liked softer mattresses

"I had liked softer mattresses in the past but my soft bed was giving me daily back and hip pain and it was hard to stand up when I got out of bed. I had slept on a very firm mattress on vacation and was surprised when I had no pain in the morning and slept the whole night. I tried going to a furniture store for a new mattress but the salesman didn't listen or help me find what I needed. And the prices were 3 times what this mattress cost me. I found this mattress by searching online for a firm mattress for a stomach sleeper. Found this in a review and the reviews on the site reflected what I was looking for. Got the mattress and my back and hips felt better in less than a week. So grateful! I also love the firm on one side and a little more cushioned firm on the reverse. Both feel great!!"

— Susan R. (5/5)

Mattress is not firm at

"Mattress is not firm at all. I sink into it way more than any other mattress I’ve had. I wake up many times a night with my hip asleep and it exacerbates my neck pain. Very disappointed."

— Summer N. (2/5)

It’s perfect. I’ve been wanting

"It’s perfect. I’ve been wanting a new mattress for several years. I’m happy to have gotten this one because it is light to move and flip over, changing the place I sleep on."

— Ellen R. (5/5)

Great bed. Affordable. Easy delivery.

"Great bed. Affordable. Easy delivery."

— John M. (5/5)

I'm in love with this

"I'm in love with this mattress. After visiting Thailand and learning that their very firm mattresses were absolutely right for my back, I came home and searched for a mattress that would have that same feel. After years of waking up with a stiff and aching back, I now wake up feeling great!"

— Jody G. (5/5)

Plank Firm mattresses are 100%

"Plank Firm mattresses are 100% the best on the market! They are true substance with no useless fluff. I suffer from severe lumbar degenerative disc disease, which is aggravated by thick soft padding, which only makes you sink down into the mattress. I have purchased both twin size & full size Plank Firm mattresses from Brooklyn Bedding. They are easy to set up. Packaging & shipping are excellent, with no issues. I highly recommend Plank Firm mattresses for anyone with lumbar and/or pelvic osteoarthritis!"

— Nanette R. (5/5)

Excellent bed!!!

"Excellent bed!!!"

— Scott C. (5/5)

Q&A

What type of foam (polyfoam, memory foam or latex?) and what are density specifications?
Hi Brana, The Plank mattress is made with a combination polyurethane foam core and with fast response memory foam. The core density specification: 1.8 LBS 36 ILD Fast response memory foam density specifications: 3.5 LBS 28 ILD Thank you
How long can a plank mattress be stored tightly wrapped before it must be opened up and finally used (after it’s shipped)?
Hi Pat, We recommend not letting your mattress sit in the packaging longer than 120 days. Thank you
Since its made of foam, How firm is the mattress ? I prefer same like rock or floor? Is it that firm?
Hi Jahnavi, The Plank mattress is made as firm as we can possibly make a mattress that is not made of flooring. Thank you
Besides firm &amp; extra what levels would be considered just a little less as firm but by no means plush or soft
Hi Brenn, If you are looking for something slightly less firm than the Plank mattress, please check out the Titan mattress https://titanmattress.com/products/titan?variant=17225382592602 Thank you!
Can both sides be an 8 on firmness scale rather than 8 and 10?
Unfortunately, we cannot customize the Plank mattress.