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Plank Firm

The Firmest All-Foam Mattress

25% OFF
WITH CODE FALL25
Brooklyn Bedding Plank Firm Mattress on a bed with badges reading “2026 Forbes Vetted Best Product Awards,” “The Strategist 2025,” and “WIRED Recommends 2024.”

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Plank Firm

The Firmest All-Foam Mattress

4156 reviews
Regular price  $749.00 Sale price  $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>365-Night Trial</p>

365-Night Trial

<p>Free Shipping </p>

Free Shipping

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Plank Firm Supportive Benefits

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

Every layer is thoughtfully engineered to provide comfort, support, and durability. Explore the design to see what goes into a better night's sleep.

Plank Firm

Award-Winning & Trusted by Experts

NapLab

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

NapLab
NCOA

The National Council on Aging (NCOA) names Plank Firm the Best Firm Mattress Overall in their Best Firm Mattresses Guide 2026

NCOA
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

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
YouTube Video UhGGC-VU0q8

What To Expect

365-Night Trial
We are committed to helping you find your perfect mattress. Enjoy our 365-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.

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 does the Plank Firm weigh and what are it's dimensions?
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 (opens in a new window).

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 5" 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 (opens in a new window).

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 365-night comfort trial?

If during your 365-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 365-night comfort trial on one occasion. The second occasion is not eligible for a return.

We do our very best to donate, recycle, or otherwise repurpose all returned mattresses. 

Please contact us at support@brooklynbedding.com (opens in a new window) 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.

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Complete Your Sleep Experience

4 sleep experience options available
  • Sheets

    Sheets

    All of our sheet sets are cut deep-pocket, which matters...
    SHOP Sheets
  • Pillows

    Pillows

    The right pillow depends on how you sleep. Side sleepers...
    SHOP Pillows
  • Mattresses

    Mattresses

    Brooklyn Bedding manufactures its own mattresses factory-direct, which is why...
    Shop Mattresses
  • Furniture

    Furniture

    Every mattress needs a supportive, solid base. Foundations and platforms...
    SHOP Foundations

Overall rating: 4.665303 / 5 from 4156 reviews.

AI Generated Review Summary

The Plank Firm mattress offers firm and ultra-firm support, with a flippable design for customizable comfort. Its high-quality foam layers provide excellent support, though opinions on back pain relief vary. Customers appreciate its firmness and ability to be flipable, making it a great choice for those seeking maximum support.

Summary topics

  • Quality (5%): Customers loved the great quality of the mattress, which was mentioned multiple times in the reviews.
  • Support (6%): Customers keep praising the great and excellent support provided by the mattress, making it the most common opinion.
  • Firmness (14%): Customers expressed appreciation for the firmness of the mattress, with multiple reviews mentioning its comfort.
  • Sleep Quality (12%): Customers expressed satisfaction with the mattress, praising its firmness and ability to be flipable.

Review topics: ["fit","instructions","support","feels","size","quality","delivery","issues","weight","material","packaging","price","improvement","deal","looks","service","box","value","customer service","works","comfort","edges","wife","set","surface","foam","husband","use","cover","frame"].

Review highlights

  • "Plank mattresses are high quality and the sleep is equally fantastic." — Philip C.
  • "We love this mattress." — Amber M.
  • "So far after a month the quality still feels great and it sleep fantastic." — Matthew K.

Reviews

I've been buying beds from

"I've been buying beds from Brooklyn Bedding since 2021. Quality, firm beds every time. I grew up sleeping on the floor, so a firmer bed was always necessary. Brooklyn bedding firm bed choices will always be my go-to until the day I die"

— Jeremy N. (5/5)

No Regrets

"I waited to sleep on this mattress a few weeks before submitting a review. I like to sleep on my side, back and stomach and if the mattress is too soft, I wake up with lower back pain. Im in my late 50’s & weigh 225 to provide some background. This Plank mattress has been great for my wife and I. We sleep on the softer side of the mattress (#8 of 10 firmness) and love it. The first two days we woke up a little achy until we adjusted from our old mattress but now, this has been a purchase we don’t regret. We love the firmness and there is very little movement to wake the other when one of us turns over during the night. We would definitely recommend it for someone who sleeps in multiple positions and/or experiences lower back pain from sleeping."

— GLENN D. (5/5)

Firm and no chemical smell!

"This may be the best mattress I've ever owned. It is super firm, well put together and when we opened it up there was never once any chemical smell or off-gassing like we've experienced in the past from manufactured foam mattresses. Very impressed with the quality!"

— Nicholas J. (5/5)

It's been less than a

"It's been less than a month of sleeping on your mattress. I've only slept on one side. And, as I can find no notation distinguishing firm from extra-firm, I'm not sure which side I've been sleeping on. Perhaps another review would be merited in 3-6 months."

— Christopher W. (4/5)

Great support!

"Husband and wife, both 200 pounds and more. Sleeping on the firmest side with a thin "My Pillow" on top of the mattress which gives just enough cushion when sleeping on back or side. Much better than the old worn-out mattress."

— Christine M. (5/5)

3. 5 out of 5

"Motion isolation barely exist. I put my coffee down for 2 seconds and my son from the other side caused it to tip over. Luckily I had a protective cover on it. The softer side is not bad for soft but the harder side is not that firm. It collapses under weight and I feel the springs. Over all I rate it a 3. 5 out of 5 because although firmer than most mattresses, for the price point it feels cheaply made."

— LEI W. (3/5)

I was looking for a

"I was looking for a firm bed with just enough padding on top to make it slightly soft -- this mattress was perfect - It is firm and very firm, and has just enough padding to make it comfortable to lie on for an extended time. I love this mattress for all the right reasons"

— MICHAEL T. (5/5)

Grateful for Much Better Sleep on My New Firm Mattress!

"Slept in the bed for a week. I love the extra firmness - it's very comfortable and I'm awaking with significantly less back pain. I sleep the majority of the night on my side."

— Frederick M. (5/5)

So comfortable!

"The bed is very comfortable. I had back pain from my old mattress because it was too soft but now with this new bed I sleep so much better."

— Vanessa E. (5/5)

Softer than expected

"The bed is not as firm as I was expecting, and is espically "soggy" near the edges. Its of fine quality, and hard to say how exactly the firmness will holdup overtime. Not sure its worth the large price tag."

— William N. (3/5)

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.