Written by Lisa Bowman, Fortune Recommends Sleep Writer
If you’re looking for a firm mattress, you’ve come to the right place. Many mattresses claim to be super firm yet don’t quite deliver, but Plank mattresses by Brooklyn Bedding are different—they’re firm with a capital ‘F.’ Plank manufactures two mattresses, the Plank Firm all-foam and the Plank Firm Luxe hybrid, both flippable, offering two firmness levels in one.
These mattresses were inspired by the firmness of Tatami mats, which were once considered a luxury for Japanese nobility to sleep on in ancient times. Our pick is the Plank Firm, but we’ve tested both mattresses to see how well they suit different body types and sleeping styles.
Curious to see if an ultra-firm mattress could give you the sleep of your life? Read on to discover the best mattress for you based on our expert-backed analysis.
Our favorite Plank Mattress
The Plank Firm delivers on its promises of being a firm foam mattress. Its dual-sided design offers a firm feel on one side and extra-firm on the other. It provides exceptional spinal support with an ‘on top of’ the bed feel, has great edge support, and is available in various sizes.
Compare Plank mattresses
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| Plank Firm | Plank Firm Luxe | |
| Rating | ||
| Price (Queen) | $1,332 | $1,532 |
| Material | Foam | Hybrid |
| Sleep style | Back and stomach | Back, side, stomach |
| Firmness | Firm and extra-firm (dual-sided) | Firm and extra-firm (dual-sided) |
| Cooling | Breathable cover, open-cell foams, optional cooling cover upgrade starting at $100 | Breathable cover, open-cell foams, coils, optional cooling cover upgrade starting at $100 |
Plank Firm
Key product features
What you should know
The Plank Firm is a 9-inch-tall dual-sided foam mattress that offers a firm and extra-firm sleeping surface. Truly firm foam mattresses are a rarity, but this one delivers—it’s one of the firmest beds we’ve ever tested.
- Our testing team loved the support offered by the Plank Firm, reporting that it did a great job keeping the hips elevated and spine in neutral alignment.
- Made with dense, durable foams, exceptional support, and great edge support, we think $1,332 for a queen is great value if you’re looking for a seriously firm bed.
- Back and stomach sleepers will appreciate the fantastic spinal support, but most side sleepers will likely find the lack of pressure relief uncomfortable.
- This bed has higher than average motion transfer for a foam mattress, so a restless partner, particularly on the extra-firm side, may disrupt your sleep.
- This mattress has fairly decent cooling for an all-foam mattress, but an optional GlacioTex™ cooling cover upgrade is available, starting at $100 for twin size.
Plank Firm overview
The Plank Firm is a 9-inch tall foam mattress, which falls on the lower end of the range of a standard depth mattress. This bed is available with an optional GlacioTex™ cooling cover upgrade, but we tested the version with the standard breathable cover.
Specs
| Price (queen) | $1.332 |
| Material | Foam |
| Firmness | Firm and extra-firm (dual-sided) |
| Adjustable base compatible | Yes |
| CertiPUR-US® certified | Yes |
| Weight (queen) | 95 lbs |
| Height | 9” tall |
| Trial | 120 nights |
| Warranty | 10 years |
| Shipping | Free to contiguous U.S., $125 to Alaska and Hawaii, shipping to Canada starts at $250 |
| Made in the U.S. | Yes, using foreign and domestic components |
Construction
The Plank Firm is a dual-sided mattress, so we’ll break down the construction with the extra-firm side facing up.
Quilted cover
The Plank Firm starts with a breathable .75-inch quilted cover top that feels soft but not plush, as it has continuous stitching to ensure there’s no loft. This thin poly foam makes up the comfort layer of this mattress. The standard cover doesn’t feel cool to the touch, but hot sleepers can upgrade to the GlacioTex™ cooling cover that features a panel containing cooling fibers, which draw heat away from the body and keep the cover feeling cool. The cost starts at $100 for a twin.
Support layer
Six inches of high-density foam make up the support layer, which offers deep compression support, keeping the spine in alignment while relieving pressure at heavier parts of the body, like the shoulders and hips. Traditional synthetic foams can trap heat due to their high-density construction that doesn’t allow for much airflow, but foams in this bed feature an open-cell design to help counteract this. (1)
Comfort layer
This layer becomes the comfort layer when the firm side is in use. It features two inches of supreme response comfort foam that gives the firm side its slightly plusher feel, offering slightly more contouring and pressure relief while still feeling firm. This foam is responsive and gives the firm side an element of bounce.
Quilted bottom cover
The bottom cover is the same .75-inch breathable quilted top as the top cover, becoming the cover of the firm side when the mattress is flipped. If you opt for the GlacioTex™ cooling cover upgrade, it will also feature on this side. We should point out that the mattress doesn’t have handles, which is inconvenient for a flippable mattress, especially as it’s pretty heavy, weighing around 95 pounds for a queen.
Firmness
This foam mattress is dual-sided, with a different firmness level on each side. We ranked the firm side of the mattress as 7.5 out of 10, which is true firm, while the extra-firm side was 8.5 out of 10, which is almost extra firm. For reference, the industry standard for medium-firm is 6.5 out of 10, so whichever side you have this mattress, it will feel a lot firmer than average.
The extra-firm side is one of the firmer beds we’ve ever tested, with zero sinkage that kept our spine in perfect alignment, which is essential for avoiding aches and pains related to poor sleeping posture. (2) The firm side offers slightly more cushioning and contouring but still feels very firm. So, if you love a softer mattress with deep sinkage, we’d steer you far away from the Plank Firm.
Support
With layers of dense foam, this bed does a great job of keeping the hips elevated and the spine in neutral alignment, which is essential for pain-free, quality sleep. (3) There’s zero sinkage on the extra-firm side and a little sinkage on the firm side, which offers some body contouring. Our testers think this mattress is great for back and stomach sleepers. Heavy-weight sleepers usually experience the mattresses as softer than advertised, as their heavier weight allows them to sink further into the foams. However, as this mattress is so firm, we think it should still offer plenty of support for most heavy people.
Pressure relief
Unsurprisingly, given its firm foams, the Plank Firm doesn’t offer much pressure relief, although the firm side offers slightly more as the foam comfort layer on this side is more forgiving. However, we don’t think either side of this mattress is suitable for side sleepers, who need softer foams and more sinkage to relieve the pressure placed on the hips and shoulders in this position. Experts also recommend mattresses with a 12 to 14-inch depth for side sleepers as they allow for more sinkage; with its 9.5-inch height, the Plank Firm falls well outside this category. (4)
Some heavier side sleepers may carry enough weight to sink into the layers for adequate pressure relief, but if you spend the majority of the night on your side you might find it more comfortable sleeping on a mattress that offers better body contouring.
Research shows that sleeping on a firm mattress causes significantly more contact pressure on the body than a medium-firm mattress does when sleeping on the back, especially around the upper back and buttocks. (5) This can lead to discomfort and sores, so it’s important to ensure your chosen mattress provides adequate pressure relief for your body type.
Responsiveness
Foam beds don’t tend to offer much bounce as foam isn’t a naturally springy material. The extra-firm side isn’t responsive, but it’s easy to move around on as there’s minimal sinkage, so you feel on top of the bed rather than trapped in it. This could be a plus point for people with mobility issues and combination sleepers (however, remember that the bed isn’t great for side sleepers).
The supreme response comfort foam on the firm side offers slightly more bounce, but we absolutely wouldn’t describe this bed as bouncy—if you like a responsive mattress, check out our pick of the best hybrid mattresses.
Motion isolation
Motion isolation can be an important factor for people who share their beds with partners, pets, or children, as it prevents movement from traveling across the mattress when a co-sleeper tosses and turns or gets in and out of bed. All-foam beds tend to offer better motion isolation than hybrid or innerspring beds, as they don’t feature bouncy coils that can cause ripples of motion.
This bed has minimal bounce, so we were surprised to find that motion transfer was higher than average for a foam model. The extra-firm side was the worst culprit—our testers reported feeling disturbed when their partner moved around. Results were better for the firm side; although testers could feel their partner entering and exiting the bed, they weren’t disturbed when their partner tossed and turned.
Even if you don’t wake up fully when a partner moves around, research shows that higher motion transfer can increase lighter sleep and decrease deeper sleep. (6) Deep sleep is when the body repairs itself and strengthens the immune system, so you need to spend enough time in this sleep stage to wake up feeling well-rested. (7)
Edge support
Strong edge support allows you to use the whole surface area of the bed and provides a sturdier perimeter for ease of getting in and out of bed, which is beneficial for seniors and those with mobility issues. All-foam beds often don’t have as good edge support as hybrids or innersprings because foam is easier to compress than coils. However, as the Plank Firm uses such dense, firm foams, we found it to have great edge support.
Our testers reported little to no sinkage when laying on the edge of either side of the mattress and only two inches of compression when sitting on the edge. There was slightly more sinkage when sitting on the corner, but not enough to cause them to feel unstable.
Cooling
The Plank Firm contains super dense foams, which have a tendency to store heat as there’s not much room for air to circulate. However, Plank has counteracted this by using an open-cell construction in the foam layers, which allows more heat to escape. (1) Plus, as you sleep on top of the bed rather than sinking into it, more of your skin’s surface area is exposed to the air, which can help with temperature regulation. (8) The cover is also breathable, although it doesn’t feel cool to the touch.
For an all-foam bed, the Plank Firm offers decent cooling—the temperature rose by seven degrees while lying on the bed during testing—but it’s certainly not a cooling mattress. If you usually sleep hot or live in a warm climate, we wouldn’t recommend the Plank Firm, as a high body temperature can negatively impact sleep quality. (9) Foam lovers who require cooling should look for foams that contain phase change material, which aids heat dissipation. (10)
If you love the sound of the bed but are concerned about temperature regulation, you can try the GlacioTex™ cooling cover upgrade, which starts at $100 for a twin. This cover is designed to be cool to the touch and features fibers that help draw heat away from the body. Or you can check out the Plank Firm Luxe, which sleeps a bit cooler as it’s the hybrid version of the bed, containing a coil unit that lets more air pass through.
Performance for couples
Couples who love to spread out will appreciate the good edge support on the Plank Firm as it allows you to use the whole surface area of the bed securely. Our testers found that the firm side offers decent motion isolation, but motion transfer is higher on the extra-firm side, which could leave you feeling disturbed when your partner moves around.
The mattress is easy to move around on as there’s very little sinkage, but it’s not bouncy, so it may not be the most comfortable mattress for sex. If you tend to overheat when sharing, you may prefer something with more cooling technology, as this bed isn’t a particularly cooling mattress.
Overall, we wouldn’t say this is the highest-rated mattress for couples, but if both partners appreciate a firm bed, sleep temperature neutrality, and aren’t affected by motion transfer, it could be a good option.
Price
The Plank Firm costs $1,332 for a queen without the cooling cover upgrade. This is around the average price for a foam bed, but the Plank Firm stands out as it’s one of the only truly firm all-foam mattresses available. Its dual-sided design means it should last longer (if you regularly use both sides), plus it’s made with dense, high-quality foams. All in all, we think this mattress offers great value.
What customers are saying
The Plank Firm has a rating of 4.3 stars on Amazon, based on 122 reviews. Many positive reviews come from people searching for a truly firm mattress.
“I’ve been looking for a mattress as firm as this for the longest. I’ve had it for several weeks now and love it. It feels like the mattresses that I encountered while traveling in Asia, super comfortable and great for your back. Not soft and mushy like most beds found in the US. Great mattress at a great price.”
“Swimming Fish,” verified Amazon reviewer
People commented that the mattress soothed their back pain, with Amazon reviewer “M Avita” posting: “Wow. If you have back problems—even minor, nagging ones—seriously give this bed a try. So good. Life-changing. Literally…this bed may change your life.”
However, many negative reviews report that the mattress sags over time—this can sometimes happen with foam, which has a tendency to soften with repeated use.
Amazon reviewer “pnw1975” initially wrote a glowing review about the Plank Firm but updated it later. They write: “[The] mattress is not even a year old and sags badly. The edges compress so easily that I can’t sleep near the edge without feeling like I’ll roll off as soon as I go to sleep. We’ve flipped, rotated, etc., still feels like garbage. Brooklyn Bedding support sounded responsive until I told them I wanted to initiate a warranty claim. Now I get nothing but the run-around.”
We’ve featured the Plank Firm in:
- Best firm mattresses of 2024
- Best mattresses for scoliosis of 2024
- Best mattress for heavy people 2024
- Best mattress for back sleepers in 2024
- Best mattress for stomach sleepers
- The best mattress of 2024
- Best mattresses-in-a-box of 2024
- Best mattresses under $2,000
Who the Plank Firm is recommended for:
Back sleepers
Some back sleepers love a super firm mattress, and the Plank Firm is great for this position as it keeps the lumbar area elevated and in line with the rest of the spine, which is essential for a healthy sleeping posture. However, there’s a common misconception that back sleepers with back issues need a firm mattress when research suggests that a medium-firm mattress is the best for alleviating back pain. (11) Of course, if you find a firm mattress comfy, that’s great, but don’t feel like you need to sleep on one for back pain if you prefer sleeping on a slightly softer bed.
Stomach sleepers
Sleeping on your stomach places most of your body weight at the hips, which can cause them to sink out of alignment if your mattress isn’t supportive enough. This can then lead to body aches and pains. The Plank Firm is ideal for stomach sleepers as it keeps the entire body on top of the mattress with minimal sinkage. However, be aware that stomach sleepers with larger chests may find the lack of sinkage on the extra-firm side uncomfortable.
Combination sleepers
While we don’t recommend this mattress for most side sleepers as it’s not plush enough, if you’re a combo sleeper who switches between your back and stomach, you may love that it’s easy to change positions on the Plank Firm. This is because the minimal sinkage and slight bounce keep you feeling on top of the mattress, which makes position shift a breeze. Studies even show that sleeping on a mattress like this improves sleep quality and restorative function, as your muscles have to work less when switching positions. (12)
Heavy-weight sleepers
Heavier sleepers can sometimes struggle to find a supportive mattress as they usually experience mattresses that are softer than advertised due to their heavier weight sinking deeper into the layers. Unfortunately, this can cause spine misalignment, which is a recipe for an aching body over time.
The Plank Firm is so supportive that we think many heavy-weight back and stomach sleepers may find the support and pressure relief they need. However, those on the heavier end of the scale may prefer a mattress with coils designed for plus-size people, which could be more durable in the long run.
We don’t recommend this mattress for light- to average-weight side sleepers as they likely won’t get the required pressure relief in this position. Still, some heavier side sleepers may find it comfortable as they’ll experience more body-contouring than their lighter counterparts. However, we think there are better mattresses for dedicated side sleepers—look for one with superior cushioning.
Who the Plank Firm is not recommended for:
Side sleepers
Side sleepers need adequate sinkage to relieve pressure on the hips and shoulders, which bear the weight of the body in this sleeping position. The Plank Firm is made with ultra-dense foams that offer minimal sinkage, so we don’t think it’s suitable for those who love sleeping on their side. Some heavier side sleepers may carry enough weight to sink a little further, but we still think there are more suitable beds for this sleeping position. For better options, check out our best mattresses for side sleepers.
Memory foam lovers
Although it’s an all-foam mattress, the Plank Luxe provides minimal sinkage, which is great for people who prefer to feel like they’re sleeping ‘on top of’ the bed. However, this may not be ideal for those who love memory foam’s deep sinkage and pressure-relieving hug. Instead, take a look at our list of the best memory foam mattresses.
Exceptionally hot sleepers
Although the open-cell foams, ‘on top of’ the bed feel, and breathable cover provide decent cooling for a foam bed, we don’t think this will be adequate for particularly sweaty sleepers. There’s the option of the GlacioTex™ cooling cover upgrade (starting at $100 for a twin), which should provide more relief with its cooling fibers. Still, exceptionally hot sleepers may find more comfort in a bed with more advanced cooling features. Interested? Here’s our pick of the best cooling mattresses.
How we rated the Plank Firm
We test all the mattresses we recommend to give you a factual, unbiased view of the product, helping you spend your money wisely and get the best possible sleep. We assess a number of categories that affect how well a mattress will suit your particular body type and sleeping style—read out the full mattress testing methodology if you want to learn more.
Plank Firm pricing and sizing
The Plank Firm is available in a huge range of sizes, which is ideal if you love a firm bed and require an unusual size.
Please note that prices are subject to change and are correct at the time of publishing. The below prices do not take into account any discounts or special offers.
| Size | Price (without GlacioTex™ cooling cover upgrade) | Price (with GlacioTex™ cooling cover upgrade) |
| Twin | $749 | $849 |
| Twin XL | $849 | $974 |
| Full | $999 | $1,124 |
| Queen | $1,332 | $1,482 |
| King | $1,532 | $1,732 |
| Cali king | $1,532 | $1,732 |
| Split Cali king | $1,698 | $1,948 |
| Short full | $999 | $1,124 |
| Short queen | $1,332 | $1,482 |
| Olympic queen | $1,532 | $1,732 |
| Short king | $1,532 | $1,732 |
| RV king (72” x 80”) | $1,532 | $1,732 |
| RV king (70” x 74”) | $1,532 | $1,732 |
| RV king (70” x 80”) | $1,532 | $1,732 |
Warranties and policies
Shipping and delivery
The Plank Firm is delivered compressed in a box to your door, with free delivery to the contiguous U.S. Customers in Alaska and Canada must pay a shipping fee of $125, and the mattress can also be shipped to Canada, with fees starting at $250. Please note that shipping fees are non-refundable if you choose to return the mattress. Brooklyn Bedding doesn’t offer white glove delivery, so bear this in mind as the mattress is pretty heavy, weighing around 95 pounds at queen size.
Sleep trial
This product offers a 120-night sleep trial, but you must have owned the bed for at least 30 nights before requesting a return. 120 nights is around the industry average. You’ll be required to pay a $100 processing fee if you return or exchange the mattress, and you won’t get a sleep trial on your second mattress.
Warranty
This bed comes with a 10-year warranty, which is on the lower end of the average. This warranty covers manufacturing defects, sagging when used on an adequately supportive base, and foam impressions deeper than one and a half inches. Your mattress will either be repaired or replaced, depending on the issue. The warranty doesn’t cover normal softness increase, sagging due to being used on an incompatible base, loose threads, or stains. Brooklyn Bedding states that any stain will void the entire mattress warranty, so be careful with that morning coffee.
Additional models from Plank
Key product features
Who we recommend Plank Firm Luxe for
Stomach sleepers
If you sleep on your front, you may need a lot of support to keep the hips lifted in line with the rest of your spine (unless you enjoy waking up with back pain…), and the Plank Firm Luxe has support covered. The firm side is best for light to average-weight stomach sleepers as it offers better cushioning than the extra-firm side, and either side works for heavy-weight stomach sleepers. However, we must stress that if you have a large chest, you might find the minimal sinkage on either side uncomfortable.
Heavy-weight sleepers
Heavier people need a lot more support to maintain a healthy sleeping posture, and the Plank Firm Luxe offers incredible support with its dense foams and strong innerspring unit. Ultra-heavy sleepers will especially appreciate the extra-firm side.
Heavy-weight combination sleepers should feel comfortable in most positions, although side sleepers who prefer deep cushioning may not find the foam plush enough. However, heavy combination sleepers will likely love the mattress bounce and how easy it is to change positions.
Combination back and stomach sleepers
We wouldn’t recommend this mattress for light- to average-weight combination sleepers who spend a lot of the night on their side as it may not offer enough pressure relief, but sleepers of all body weights who switch between their back and side might enjoy it. It provides great support for these positions, and its responsiveness and minimal sinkage make switching positions effortless.
Plank Firm vs. Plank Firm Luxe
Plank manufactures only two mattresses, the Plank Firm and the Plank Firm Luxe—let’s dive in and see how they compare.
The Plank Firm is Plank’s all-foam offering, while the Plank Firm Luxe is a hybrid that combines dense foam and coils. Both mattresses are dual-sided with flippable firmness and come with free bed-in-a-box shipping within the contiguous U.S., a 120-night trial, and a 10-year warranty. They’re also both sold in a range of sizes, including short and RV sizes.
Price: The Plank Firm Luxe is slightly more expensive than the Plank Firm, at $1,532 for a queen size, compared to $1,332. Hybrids tend to be more expensive than foam models as coils can be costly, but we think the Plank Firm Luxe offers great value as it’s made with durable materials.
Firmness: Both mattresses feature a firm and extra-firm side, but the Plank Firm Luxe’s extra-firm side is slightly firmer than the Plank Firm’s, coming in at 9 out of 10, compared to the Plank Firm’s 8.5. Both firm sides ranked at 7.5.
Body weight: Light-weight back and stomach sleepers who love a firm feel could love both the Plank Firm and Plank Firm Luxe, but the extra-firm side of the latter will likely be way too uncomfortable as you won’t have enough body weight to allow for any contouring. Average-weight back and stomach sleepers will likely be well-supported on either mattress but opt for the Plank Firm unless you’ll make use of the extra-firm side of the Plank Firm Luxe, which almost feels like sleeping on the floor. Heavy-weight sleepers could make the most of either mattress, as the sturdy support caters well to this body weight. Heavy-weight occasional side sleepers might be comfortable on the firm side of either mattress, but the extra-firm sides don’t offer enough cushioning.
Sleeping position: The Plank Firm Luxe’s firm side has a thicker quilted top than the firm side of the Plank Firm, so it’s more forgiving for side sleepers. Average- to heavy-weight side sleepers might get enough pressure relief on the Plank Firm Luxe’s firm side, but steer clear if you have hip pain, as there isn’t enough cushioning.
Back sleepers may find the extra-firm side of the Plank Firm Luxe too rigid, but we recommend its firm side and both sides of the Plank Firm for this sleeping position. Stomach sleepers will appreciate the incredible support of both mattresses, but lighter body weights may struggle with the lack of cushioning on the Plank Firm Luxe’s extra-firm side, which could place too much pressure on the hips.
Responsiveness: Predictably, the Plank Firm Luxe is way bouncier than the foam Plank Firm, as it contains an innerspring unit. The coils are in the center of the mattress as it’s flippable, which makes for an incredibly bouncy, trampoline-like experience on both sides—it’s truly one of the bounciest mattresses we’ve ever tested. This could be great for combination sleepers, people with mobility issues, or couples who prefer a springy mattress for sex.
Cooling: Both mattresses contain open-cell foams designed to offset dense foams’ usual heat-trapping abilities. However, the Plank Firm Luxe has a coil support unit instead of the Plank Firm’s foam support unit, which allows more air to circulate, cooling the mattress down more. This makes the Plank Firm Luxe slightly cooler than the Plank Firm. Both mattresses also offer the option of a GlacioTex™ cooling cover upgrade, starting at $100 for a twin.
Plank Firm vs. competitors
Not sold on the Plank Firm? We hear you—its ultra-firmness isn’t for everyone. If you’re looking for an all-rounder, the Saatva Classic innerspring is a great choice. It comes with three firmness levels, has targeted lumbar support, and suits all sleeping styles. WinkBeds The WinkBed is another great hybrid that offers versatility with four firmness options, making it ideal for most sleepers. Hot sleepers will appreciate the addition of a gel infusion in the foams.
The Emma Hybrid Comfort is a similar price to the Plank Firm Luxe and has a firm feel with the added benefits of superior cooling (thanks to cooling foams and a coil unit), a machine-washable cover, and zoned support. Research shows that mattresses featuring zoned support are ideal for alleviating symptoms in those with back pain. (13) Plus-size? We think the Plank Firm is a great choice for heavier sleepers, but if you prefer the feel of a hybrid, the Titan Plus is a solid choice. It has a firm feel with a gel foam pillow top, although, like the Plank Firm, it may not offer enough pressure relief for some heavier side sleepers.
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| Plank Firm | Saatva Classic | Titan Plus | WinkBeds The WinkBed | Emma Hybrid Comfort | |
| Rating | |||||
| Price (Queen) | $1,332 | $2,095 | $1,249 | $1,799 | $1,319 |
| Material | Foam | Innerspring | Hybrid | Hybrid | Hybrid |
| Sleep style | Back and stomach | Back, side, stomach | Back, side, stomach | Back, side, stomach | Back, stomach |
| Firmness | Firm and extra-firm (dual-sided) | Three firmness options | Firm | Four firmness options | Firm |
| Cooling | Breathable cover, open-cell foams, optional cooling cover upgrade starting at $100 | Cotton cover, coils | Gel foam, coils, optional cooling cover upgrade (starting at $100) | Breathable cover, gel foam, coils | Breathable cover, cooling foams, coils |
FAQs
How firm is a Plank Mattress?
Plank sells two mattresses—the Plank Firm and Plank Firm Luxe. Both mattresses are dual-sided and marketed towards people who love a firm sleeping surface. The Plank Firm is a foam bed with a firm and extra-firm side—and it’s among the firmest mattresses we’ve ever tested. The Plank Firm Luxe hybrid also has a firm and extra-firm side, but its extra-firm side is slightly firmer than the Plank Firm.
How long does a Plank Mattress last?
Plank mattresses are made with durable, dense foams that should stand the test of time. The Plank Firm and Plank Firm Luxe come with a 10-year warranty covering the mattress for defects in materials and workmanship and foam impressions deeper than one and a half inches. However, be aware that foams do tend to soften over time, so your mattress may feel less supportive in the future.
How long should you let a Plank Mattress expand?
Plank mattresses are delivered compressed in a box, and Plank recommends letting the mattress sit for three to five hours before sleeping on it. An unpleasant off-gassing odor is not unusual with bed-in-a-box mattresses—this is the result of harmless chemicals escaping from the compressed foam (14). It could take a day or two to disappear.
Our experts
Lola Ravid, BSN, RN
Lola Ravid is a Registered Nurse with a Public Health Certification who is passionate about research and education. She has over ten years of combined experience working with children and caregivers in hospitals and public schools. She is a contributing writer and educator for La Leche League International (LLLI) and Selective Mutism Association (SMA). Lola also serves on the Review Team for La Leche League International. She has published on sites like The Good Man Project, California Health Report, and Allnurses.com.
Krista Manning
Krista Manning is an accomplished medical copy editor and fact-checker who stands out in the pharmaceutical, health, and wellness domains. With a meticulous eye for detail and a command of medical language, Krista ensures the accuracy and clarity of content. Beyond her professional expertise, Krista is an advocate for mental health awareness. Recognizing the crucial intersection of psychological and physical well-being, she actively contributes to projects that promote mental health awareness within the healthcare narrative. Krista’s commitment extends beyond the pages she edits, emphasizing the holistic nature of health communication.
Lisa Bowman
Fortune Recommends Sleep Writer
About Author
Lisa is a sleep writer for Fortune Recommends, which combines two of her greatest passions – writing and sleeping. She can also be found writing about fitness, sustainability, and vegan food.
Her life revolves around her two rescue dogs (who she shares her bed with) and if she’s not running around after them, she’s likely doing yoga, buying new plants, or enjoying a sunset rum at the beach.