Best Mattress That Won’t Sag

Written by Bridget Chapman, Former Senior Product Editor

Our Methodology

Our Certified Sleep Science Coaches have reviewed more than 300 mattresses in our lab, testing each one on its materials, comfort, cooling, support, and other categories. Learn more

Just Updated

We’ve recently re-reviewed all of our top mattresses that won’t sag picks and added more feedback from the testers in our lab – so you can rest easy that if it’s on this list, we’ve personally tested it, slept on it, and stand by its recommendation.


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Sagging mattresses are the worst. If you’ve owned a mattress for longer than a few years, you’ve likely experienced this yourself — the dips, the trenches, the once springy foam layers laying dormant in your bed. But while some sagging may be inevitable, there are ways to prevent it from going overboard. How, you ask? Well, allow us to explain.

In this guide, we’re going to introduce you to some of the best mattresses that won’t sag. As you’ll notice throughout this review, all of these beds feature strong support layers that maximize the durability and stability of their structures. So, not only are these cuddly beauties sturdy, and not only are they comfortable, but they’re specifically built to stand the test of time.

Ready to see our picks? Then keep on reading below! And don’t forget to check out our methodology section at the end of this guide for a crash course on all the factors to consider when shopping for a no-sag mattress of your own.

Our Top Pick for the Best Mattresses That Won’t Sag

We chose the Helix Midnight Luxe as our top pick due to its high-quality foam layers, which help relive pressure, and its foundation of sturdy coils at the bottom.

Best Mattresses That Won’t Sag 2024 

• Best Overall Mattress That Won’t Sag – Helix Midnight Luxe
• Best Cooling Mattress That Won’t Sag – Bear Elite Hybrid
• Best Mattress for Side Sleepers – Nectar
• Best Innerspring Mattress That Won’t Sag – Saatva
• Best Hybrid Mattress That Won’t Sag – WinkBed
• Best Organic Mattress That Won’t Sag – Nolah Natural
• Best Mattress for Heavy People – Titan Plus
• Best Firm Mattress That Won’t Sag – Plank Firm
• Best Mattress for Back Sleepers – Brooklyn Bedding Signature Hybrid
• Best Mattress for Combination Sleepers – Birch

Best Mattresses That Won’t Sag: Video Review

What We Look For In The Best Mattresses That Won’t Sag

Edge Support

When looking for a mattress that won’t sag, one of the most important things you can look for is edge support, or how strong the edges of your mattress are. We want to be sure you are getting a mattress with solid edges, so we made sure to test the edge support of every mattress in this list and include those with the strongest edges.

Quality and Durability of Materials

The quality and durability of the materials in your mattress directly relate to whether or not it will sag. Because of this, we made sure to include mattresses in this list with high-quality materials that will help keep your mattress from sagging.

Pressure Relief

We know that if you are looking for a mattress that won’t sag, one thing you are also looking for is pressure relief. To ensure that your mattress will provide you with strong pressure relief, we used a pressure map to test the properties of every mattress on this list to help you find the best mattress for your pressure relief needs.

Compare the Best Mattresses That Won’t Sag

	Helix Midnight Luxe Mattress	Bear Elite Hybrid Mattress	Nectar Mattress	Saatva Mattress	WinkBed Mattress	Nolah Natural Mattress	Titan Plus	Brooklyn Bedding Plank Firm Mattress	Brooklyn Bedding Signature Hybrid Mattress	Birch Natural Mattress
Rating	4.7	4.5	4.7	4.8	4.6	4.7	4.7	4.8	4.7	4.8
Firmness	Medium-soft: 6/10	Multiple firmness options	Medium-firm: 6.5/10	Multiple firmness options	Firm: 7/10	Medium-soft: 6/10	Firm: 7.5/10	Multiple firmness options	Medium-firm: 6.5/10	Firm: 7/10
Material	Hybrid	Hybrid	Foam	Innerspring	Hybrid	Latex	Hybrid	Foam	Hybrid	Hybrid
Cooling	—		—				—	—	—
Best For	Back Sleepers, Stomach Sleepers, Side Sleepers, Hip Pain, Seniors	Back Sleepers, Stomach Sleepers, Hot Sleepers, Hip Pain, Seniors	Back Sleepers, Back Pain, Stomach Sleepers, Side Sleepers, Couples	Back Sleepers, Stomach Sleepers, Back Pain, Hot Sleepers, Seniors	Back Sleepers, Stomach Sleepers, Back Pain, Hot Sleepers, Side Sleepers	Side Sleepers, Back Sleepers, Stomach Sleepers, Hot Sleepers, Back Pain	Back Sleepers, Stomach Sleepers, Back Pain, Hip Pain, Seniors	Stomach Sleepers, Back Pain, Seniors	Couples, Back Sleepers, Hip Pain	Back Sleepers, Stomach Sleepers, Hot Sleepers, Seniors,
	Check Price	Check Price	Check Price	Check Price	Check Price	Check Price	Check Price	Check Price	Check Price	Check Price

Best Overall Mattress That Won’t Sag – Helix Midnight Luxe

Expert Opinion

As the luxury version of the Helix Midnight, the Helix Midnight Luxe adds zoned support and a cushy pillow-top to the top layer of memory foam. When lying down on it, sleepers should experience a good deal of pressure relief while still getting support from a layer of individually wrapped coils. The coils also help prevent the bed from sagging. It’s worth noting that the Luxe also has more cooling features than the standard version of the mattress. 

Strong edge support, or how well a mattress holds up on the sides, is also extremely important for preventing sagging. Luckily, the Helix Midnight Luxe has solid results in this area and should keep side sleepers, back sleepers, and even couples satisfied.

What our tester says: “The Midnight Luxe is the brand’s luxury take on a medium-firm memory foam hybrid. I think its thick memory foam comfort layer offers plenty of pressure-relief and body contouring, while its zoned coil layer ensures you’re getting plenty of lumbar support.” – Bridget Chapman, senior product editor

What Customers Say

Customers seem to be really happy with the structural integrity of this mattress and its high-quality construction.

Pros of the Helix Midnight Luxe Mattress

• With low motion transfer, couples are unlikely to be disturbed by partners who toss and turn at night.
• The medium-soft to medium-firm feel of this model should be comfortable and pressure relieving to both back and side sleepers.
• This bed is super-bouncy and responsive, so combination sleepers should be able to easily switch sleeping positions throughout the night without getting stuck.

Cons of the Helix Midnight Luxe Mattress

• This mattress isn’t firm enough to provide hip support for most stomach sleepers, and could cause their spine to be thrown off alignment. Check our picks for best firm mattress for better options.
• This bed doesn’t provide the deep sinkage or slow-moving foam that you get in memory foam mattresses.

Think the Helix Midnight Luxe is the mattress for you? Click here for our best deal or check out our full Helix Midnight Luxe mattress review. Still not sold? Take a look at some of the other best mattresses. 

Best Cooling Mattress That Won’t Sag – Bear Elite Hybrid

Expert Opinion

Hybrids are often a safe bet when looking for an anti-sagging mattress, as their layer of springs offers a lot of extra support. The Bear Elite Hybrid goes even further by having two sections of springs: a layer of sturdy pocketed coils, as well as smaller microcoils along the bed’s perimeter, which we found gives the mattress strong edge support.

Another benefit of the Bear Elite Hybrid’s coils is that they leave plenty of room for airflow, helping keep the sleeper cool. Other cooling features in this luxury hybrid include copper infusions in the foam and an optional cover made of an exceptionally cooling material called Celliant. When we tested out the bed, we not only felt lifted by its elaborate construction — we never felt like we were heating up.

What our tester says: “Not only is this mattress cool-to-the-touch but also feels very plush and offers optimal body contouring and pressure relief. Thanks to the coils, I felt like I was laying on top of the mattress and my body was supported rather than feeling as if I was sinking in.” – Nichole Mondshein, lead reviewer and staff writer

What Customers Say

The Elite Hybrid has a little over 3,700 reviews on the Bear website, and an average customer rating of 4.6 out of 5 stars. About 20 of the reviews call out the mattress’s cooling abilities, with some folks saying the bed pairs really well with cooling sheets.

Pros of the Bear Elite Hybrid Mattress

• Bear designs its mattresses with athletes in mind, and with an added fee shoppers can choose a Celliant cover. This technology is unique in that it’s meant to promote blood flow. While we haven’t tested the material’s recovery properties ourselves, you can read more about them in several clinical trials.
• The Bear Elite Hybrid comes in three different firmness levels: Soft, Medium, and Firm. We tested the Medium model and found it to be on the softer side — a 6 out of 10 on our mattress firmness scale.
• We think the Medium model is a good fit for back sleepers and side sleepers. It’s probably too soft for stomach sleepers, although they might be comfortable on the Firm model.

Cons of the Bear Elite Hybrid Mattress

• As the brand’s luxury model, the Bear Elite Hybrid is on the pricier side, with a queen size coming in at over $2,200 before discounts. However, Bear often runs promotions and you can sometimes get a queen for closer to $1,500.
• The Celliant cover that may help in muscle recovery and keeps things cool must be purchased separately for around $130.

Think the Bear Elite Hybrid is the mattress for you? Click here for our best deal or check out our full Bear Elite Hybrid mattress review. Still not sold? Take a look at some of the other best cooling mattresses. 

Best Mattress for Side Sleepers– Nectar

Expert Opinion

The Nectar is a pressure-relieving yet supportive bed with a thick gel memory foam layer, which carries all the comfort qualities of traditional memory foam, but provides better cooling. Additionally, the 4″ layer of dynamically adjusting foam adds bounce to the mattress, preventing side sleepers from sinking too far into the bed while still offering them plenty of contouring. The materials of the Nectar — both comfortable and supportive — make it a fantastic option for side sleepers in need of pressure relief.

In order to ensure that we’re recommending the Nectar for the correct sleeping positions, we put it through our pressure map test. During testing, we spread a specialized mat across a mattress’s surface and lie down on it in the back- and side-sleeping positions. The mat then sends us a color-coded graphic displaying areas of high, moderate, and low pressure. Areas with high pressure buildup light up with the colors red and orange. Moderate pressure is indicated with the color yellow, and lower pressure shows green and blue. The Nectar gently cradles the shoulders and hips, and we don’t foresee it leaving sleepers with newfound aches and pains.

What our tester says: “I found the original Nectar mattress — the company’s flagship and most popular and affordable mattress — to be pressure-relieving, yet supportive.” – Bridget Chapman, senior product editor

What Customers Say

Shoppers of all ages compliment the Nectar’s ability to lift pressure off of sensitive areas, from the shoulder to the back to the hip.

Pros of the Nectar Mattress

• The Nectar is a quality mattress that’s still affordable, which makes it a nice choice for budget-savvy shoppers.
• This mattress has all of the sinkage, contouring, and pressure relief that a classic memory foam bed provides. It’s especially nice for people with shoulder or hip pain.
• The sinkage from this mattress should help back and side sleepers find pressure relief as the mattress conforms to their bodies.

Cons of the Nectar Mattress

• Memory foam mattresses tend to be heat-trapping, so sleepers who run hot at night may find that this bed isn’t cooling enough. The gel foam helps cool the bed down a bit, but extra-hot sleepers may need a bed with more cooling properties.
• Stomach sleepers need a firmer mattress to keep their shoulder and hips in line. The Nectar may cause stomach sleepers’ hips to sink too far into the mattress.

Think the Nectar is the mattress for you? Click here for our best deal or check out our full Nectar mattress review. Still not sold? Take a look at some of the other best mattresses for side sleepers. 

Best Innerspring Mattress That Won’t Sag – Saatva

Expert Opinion

In the market for a supportive innerspring mattress that won’t sag while you sleep? Consider the Saatva mattress. Made with a sturdy coil-on-coil construction, this bed is firm, bouncy, and built for the long haul. Durability points aside, our favorite thing about the Saatva is how well it supports a neutral spine alignment. What this means for is that it lifts the hips in line with the shoulders, creating an even line across the body. This alignment not only makes it super-easy to move around and change positions, but also helps to alleviate tension at the joints and lower back. The Saatva comes in three different firmnesses, so you can really hone in on the comfort level that’s right for you. All in all, this is a well-made bed designed to withstand a lot of wear and tear. 

We tested the Saatva’s edge support in our mattress lab, and found some of the best edge support we’ve seen. This wasn’t entirely surprising, as the Saatva uses two different coil layers as well as reinforced edges for support. We didn’t notice any sinkage at all on the Saatva, regardless if we were lying on it or sitting on it.

What our tester says: “I think the Saatva is a great option for back sleepers, as the Luxury Firm model provides enough cushioning for their lumbar region, but also lots of support to keep their spine in a neutral alignment.” – Bridget Chapman, senior product editor

What Customers Say

Customers were more than satisfied with Saatva’s customer service throughout the mattress buying process.

Pros of the Saatva Mattress

• This mattress provides tons of cushioning in the lumbar region while also adding spinal support, which is great for back sleepers.
• The layers of coils in this innerspring mattress make it bouncy and responsive enough for combination sleepers to switch between different sleeping positions.
• The Saatva is a sturdy and durable mattress, which makes it supportive enough for heavyweight sleepers.

Cons of the Saatva Mattress

• Because this mattress has a traditional innerspring feel, it’s likely that you’ll be disturbed by any movement your partner makes throughout the night. If you sleep lightly, you may need a bed with better motion isolation.

Think the Saatva is the mattress for you? Click here for our best deal or check out our full Saatva mattress review. Still not sold? Take a look at some of the other best innerspring mattresses. 

Best Hybrid Mattress That Won’t Sag – WinkBed

Expert Opinion

Hybrid mattresses can be fantastic options for folks in need of a durable structure, as they’re built with both foam and coils. This means they get the best of both worlds — cozy pressure relief up top and firm support below. Thankfully, there are a lot of hybrid models available on the market today, with one of our faves being the WinkBed mattress. 

What sets this model apart is its super sturdy construction. While the pillow top itself is pleasantly plush, the rest of the bed is anything but. After sinking through the top layers of soft foam, you’ll land on a springy section of microcoils, which is quickly followed up by a tall system of pocketed coils. This results in a ton of bouncy support that brings some much needed heft and lift to the structure. Over time, these coils will also help to support the top layers of foam as they begin to naturally sag and change shape. This mattress also comes in four different firmness levels, including an option for plus-sized sleepers, so it can appeal to a wide variety of people.

To really make sure this mattress won’t sag, we put the WinkBed through our edge support test. This allows us to determine the strength of a mattress’s perimeter, which is often an indicator of durability. Sturdy edges allow folks to really spread out or sleep towards the edge of the mattress. To test this, we sat and laid down on the edges of the WinkBed to see just how much it collapses under our weight. To our satisfaction, the WinkBed showed impressive edge support. Because it has reinforced edges, we only saw a slight collapse, which is nothing to be worried about.

What our tester says: “One of my favorite things about the WinkBed is its durability. This is a high-quality mattress that should really stand the test of time. This is great news for any sleeper, but especially nice for heavy people and couples.” – Bridget Chapman, senior product editor

What Customers Say

Many reviews take time to applaud the WinkBed’s ability to help relieve their back pain.

Pros of the WinkBed Mattress

• This mattress is designed to keep sleepers cool all night long, which is a great feature for those who sleep hot at night.
• The WinkBed is bouncy and responsive, so combination sleepers should be able to easily switch between sleeping positions without getting caught in the mattress.
• This bed is a good pick for those who enjoy the feel of an innerspring mattress. It’s super supportive and could really benefit those with lower back pain.

Cons of the WinkBed Mattress

• This mattress may be too firm for side sleepers, who usually need a softer mattress to relieve pressure from their hips and shoulders.
• The WinkBed isn’t the best choice if you’re looking to save money. But, it is often on sale, and it’s super durable, which makes it a good mattress for the money.

Think the WinkBed is the mattress for you? Click here for our best deal or check out our full WinkBed mattress review. Still not sold? Take a look at some of the other best hybrid mattresses. 

Best Organic Mattress That Won’t Sag – Nolah Natural

Expert Opinion

If you struggle with allergies or are against certain materials, you may be interested in an organic mattress. These beds are typically made with all-natural materials and usually meet certain environmental standards during the manufacturing process. The Nolah Natural is made with two layers of Talalay latex, a naturally breathable and hypoallergenic material. The bed also contains an organic cotton cover and organic wool layer that’s soft and cooling. As a hybrid mattress, this bed also has a coiled layer at the bottom made from recycled steel.

The Nolah Natural is a durable mattress made with high-quality materials, which help keep it standing strong without sagging. We found the edge support on this bed to be excellent, largely due to the strong coil layer. We especially like this mattress for back and side sleepers. These folks should find some comforting pressure relief from the bouncy latex, but still feel supported and lifted by the support system below.

What Our Tester Says: ” This Nolah mattress has GOTS (Global Organic Textile Standard) certified organic wool, GOTS certified organic cotton, natural Talalay latex, and recycled steel. It’s free of harmful chemicals and substances.”- Bridget Chapman, former senior product editor

What Customers Say

Verified buyers seem to love the medium-soft feel of this bed and think it’s not too firm and not too soft.

Pros of the Nolah Natural Mattress

• The breathable latex foam and coils make this mattress a good choice for hot sleepers.
• This mattress contains GOTS (Global Organic Textile Standard) certified materials that are eco-friendly and sustainable.
• The bouncy latex and coils make it easy to move around on this bed, which combination sleepers can appreciate.

Cons of the Nolah Natural Mattress

• We don’t think this mattress is firm enough for stomach sleepers, who may need a bit more support to keep their hips lifted and aligned with their shoulders.
• This bed isn’t the best at isolating motion, so couples may be disturbed by each other’s movement at night.

Want to know more about the Nolah Natural mattress? Read our full Nolah Natural mattress review, or click here to get the best deal. Head over to our best organic mattress roundup for more eco-friendly options.

Best Mattress for Heavy People – Titan Plus

Expert Opinion

The Brooklyn Bedding Titan is designed specifically for heavy people over 250 pounds, with extra-supportive touches such as responsive Titanflex foam in the comfort layer and an extra-tall layer of TitanCaliber-encased coils at the base. All of these materials work together to establish a 7.5/10 firmness that should appeal to heavier sleepers in all three sleeping positions. An added bonus of all this reinforcement is that the Titan is extra-durable, which means it should easily prevent sagging.

We had one of our friends, Paulie, come in and test the mattress. As a powerlifter, he fits the body type the Titan Plus was made for, and having someone like Paulie test the mattress was crucial for finessing our overall recommendation and opinion of this mattress. To Paulie, the mattress felt firm (a 7.5 out of 10 on our firmness scale) and supportive. But he could also feel contouring and pressure relief at his shoulders, as well as his lower back.

What our tester says: “The materials under the Titan Plus’ hood are sturdy and durable. You get just the right amount of cozy mobility on top, but the theme here is support. Heavier people with back problems will likely enjoy the lower body alignment the Titan Plus provides.” – Bridget Chapman, senior product editor

What Customers Say

With consideration of the mattress’s overall construction and material quality, reviewers comment on how the Titan Plus is a wonderful value buy.

Pros of the Titan Plus Mattress

• This mattress has enough firm support to keep the hips and shoulders of stomach sleepers in one straight line, which is ideal to avoid pain.
• The low motion transfer of this mattress makes it a good pick for couples, especially those who tend to get easily disturbed by the movement of their partner

Cons of the Titan Plus Mattress

• Side sleepers aren’t likely to have enough sinkage on this bed in order to relieve pressure on their hips and shoulders. Light-weight side sleepers may find they have an even harder time sinking in.
• This bed does have layers of foam, but you won’t feel like you’re sinking into them. This mattress has more of an “on top” of the bed feel, not an “in” the bed feel.

Think the Titan Plus is the mattress for you? Click here for our best deal or check out our full Titan Plus mattress review. Still not sold? Take a look at some of the other best mattresses for heavy people. 

Best Firm Mattress That Won’t Sag – Plank Firm

Expert Opinion

A firm mattress is less likely to sag than a softer one, and when it comes to firm beds, you can’t get much firmer than the Plank. An all-foam bed created by Brooklyn Bedding, it’s unique both for how firm it is and for its flippable structure. One side of the mattress has a firm feel and the other side has an extra-firm feel.

We tested out both sides of the Plank Firm in our mattress lab, and found that this bed really does live up to its name. We gave the firm side a score of 7.5 out of 10 on our mattress firmness scale and the ultra-firm side an 8.5 out of 10. No matter which way you flip it, this is going to be a firm, sturdy, and supportive mattress.

What our tester says: “I think the Plank Firm is one of the best mattresses for stomach sleepers. Both sides of the mattress, the firm side and extra firm side, should give these sleepers the support they need to keep their hips in line with their shoulders.” – Bridget Chapman, former senior product editor

What Customers Say

There are currently almost 3,200 customer reviews on the Plank Firm’s website, and the mattress has an average rating of 4.8 out of 5 stars. Most of the reviews praise the bed for being as firm as advertised, although some folks say that they wish the edge was a little stronger. A soft edge is typical of all-foam mattresses.

Pros of the Plank Firm Mattress

• Back sleepers should be comfortable on the firm side. There’s a slight amount of cushioning for the lumbar region, and the dense foams should give them a good amount of spinal support.
• We recommend that stomach sleepers go for the ultra-firm side. They need more support than any other sleeping position, and they should feel the foams lifting their hips and keeping them in line with the shoulders (this is key for maintaining a neutral spinal alignment).
• Even though it’s a foam mattress with no springs, there’s enough responsiveness in the Plank Firm for combination sleepers to be able to easily switch sleeping positions.

Cons of the Plank Firm Mattress

• The Plank Firm isn’t the best fit for side sleepers. Unlike back sleepers and stomach sleepers, they need a soft mattress that gives them lots of contouring at the shoulders and hips.

Think the Plank Firm is the mattress for you? Click here for our best deal or check out our full Plank Firm mattress review. Still not sold? Take a look at some of the other best firm mattresses. 

Best Mattress for Back Sleepers – Brooklyn Bedding Signature Hybrid

Expert Opinion

A mattress that doesn’t sag is more likely to give you spinal support, which is crucial for back sleepers. They’ll want a mattress that gives them enough pressure relief at the lumbar region while still giving them enough of a lift to promote a neutral alignment. They might find what they’re looking for in the Brooklyn Bedding Signature Hybrid — a simply constructed mattress with memory foam up top and individually encased coils at the bottom.

It’s available in three different firmness levels: Soft, Medium, and Firm. We tested out the Medium, and scored it 6.5 out of 10 on our mattress firmness scale (the industry standard for medium firm). While lying on our back, we got the pressure relief we needed at the lumbar and still felt propped up. To dig a little deeper into how the Signature Hybrid might work for back sleepers, we ran the mattress through our pressure map test, and the graphic lit up almost entirely blue in the back-sleeping position. This indicates almost no pressure buildup.

What our tester says: “Back sleepers who like an “on top” feel to their bed should also be able to sleep comfortably on the Signature Hybrid.” – Bridget Chapman, former senior product editor

What Customers Say

As one of Brooklyn Bedding’s older models, the Signature Hybrid has plenty of reviews on the brand’s website — nearly 11,000 as of this writing. Many of them say the bed is an ideal fit for back sleepers, with one verified buyer calling it “the greatest mattress I’ve ever owned.”

Pros of the Brooklyn Bedding Signature Hybrid Mattress

• The three different firmness levels mean there’s something for every sleeping position. We recommend the Medium for back sleepers, Soft for side sleepers, and Firm for stomach sleepers.
• The Signature Hybrid is fairly affordable. You can usually get a queen size for under $1,000 after discounts.
• We found this to be a fairly cooling mattress, thanks to its airflow-promoting coils. You can also add a cooling cover for an additional $150.

Cons of the Brooklyn Bedding Signature Hybrid Mattress

• There aren’t a ton of bells and whistles on this bed, so if you want something more extravagant, we recommend looking at our list of the best luxury mattresses.

Think the Brooklyn Bedding Signature Hybrid is the mattress for you? Click here for our best deal or check out our full Brooklyn Bedding Signature Hybrid mattress review. Still not sold? Take a look at some of the other best mattresses for back sleepers. 

Best Mattress For Combination Sleepers – Birch

Expert Opinion

Combination sleepers are people who switch between different sleeping positions at night. The biggest challenge for these sleepers is the lack of responsiveness some mattresses have, which makes it harder to easily switch positions. Combination sleepers sometimes struggle with memory foam mattresses, as the deep sinkage causes them to become trapped in the layers instead of allowing them to effortlessly roll around.

We chose the Birch mattress as the best mattress for combination sleepers because it has latex foam and springs that are responsive and bouncy. Combination sleepers should find themselves lifted and supported on this bed, which helps with mobility. We also think the Birch is compatible with stomach and back sleepers and should help with spinal alignment.

What Our Testers Say: “If you sleep on your back or stomach, the Birch could help relieve some pain in the hip and/or shoulder area.” – Madison Schaper, former staff writer

What Customers Say

Customers are a big fan of this mattress’s materials, and like that they can sleep on an organic surface while still being comfortable.

Pros of the Birch Mattress

• This mattress sleeps pretty cool, and we think it could be a good pick for hot sleepers.
• Back and stomach sleepers should appreciate this bed’s medium-firm feel that leans a bit more firm.
• Organic shoppers should be pleased with this bed’s eco-friendly construction.

Cons of the Birch Mattress

• This bed doesn’t isolate motion well, and couples may struggle with feeling each other tossing and turning at night.
• We don’t think this mattress is soft enough for strict side sleepers who may need a bed with more cushioning and sinkage.

Interested in the Birch mattress? Click here to get best deal, or read our full Birch Natural mattress review. Or, check out some of our other picks for the best mattress for combination sleepers.

What to Consider When Buying a Mattress That Won’t Sag

Materials

First and foremost, you’ll want to think about the materials at play. This may seem an obvious starting point, but you’d be surprised how much easier your search will be once you understand how certain common mattress materials respond to pressure over time.

For instance, poly foam is not going to be nearly as durable as memory foam, which, in turn, isn’t likely to last as long as high-density poly foam or latex. And though both pocketed coils and steel springs bring a lot of heft to a structure, steel coils typically last longer than individually wrapped (or pocketed) coils.

Firmness

Support & Spinal Alignment

While better understanding the materials themselves is important, it’s also crucial to consider how the materials are combined within a mattress. When it comes to preventing sagging, the key here is to focus on the support layers.

When we think about support, we’re thinking about the foundational layers of the mattress. Typically made of either pocketed coils or high-density poly foam, these sections are meant to stabilize the structure and provide support to both the sleeper and the softer comfort layers above it. In the case of sagging, a strong foundation will ensure that any changes to said comfort layers won’t dramatically alter the feel of the mattress.

In our opinion, pocketed coils and steel springs make the most supportive foundations. So, if durability is a major consideration for you, we’d recommend sticking with either a traditional innerspring mattress or a hybrid mattress made of both foam and coils.

Pressure Relief

Flippability

If you’re really concerned about sagging, you may want to go with a flippable mattress. There are more and more flippable models available on the market all the time, and they can be great options for folks who want to extend the life of their mattress.

And the reason why is quite simple — if you notice any sagging or dips in your mattress, you can easily flip the bed over to get a fresh feel. Though it may feel a bit laborious, oscillating between the two sides can help prevent any one part of your bed from getting too worn down.

It’s important to note that not all mattresses are flippable. But, if you want to achieve a similar vibe, you can always rotate your mattress every few months to even out the sagging across the surface.

Edge Support

How to Extend the Lifespan of your Mattress

• Rotate the mattress every 6 month 
• Deep clean it once a year and spot clean regularly
• Invest in a mattress pad or protector to create a bacteria barrier 
• Wash your sheets every week or bi-weekly 
• Replace your mattress every 6-8 years  

Warranty

You’ll also want to consider the warranty on your mattress. While most brands provide some sort of limited coverage, the extent to which your mattress can get replaced varies widely across the market. So, make sure to read the fine print to see what exactly is covered.

If your mattress happens to come with a robust warranty, this will extend its longevity well into the future. Though a great warranty may or may not be a selling point for you, it can help alleviate worries about “sagging” or general wear and tear.

Signs it’s Time to Replace Your Mattress 

• You start feeling any extreme pain 
• Your mattress starts to visibly sag 
• If you see any lumps in the mattress 
• You sleep super hot even in a cool room
• If it’s had over 8 years of regular sleep

FAQs

What types of mattresses are less likely to sag?

A mattress with at least one layer of springs in its construction (so, a hybrid or an innerspring) is going to be less likely to sag than an all-foam mattress. That being said, there are some firmer foam beds made with denser foams that should last a good long while.

How long should a mattress last without sagging?

A high-quality mattress with springs should be able to last 7 to 10 years without sagging, although some — especially ones built with reinforced materials — may last much longer. A high-quality foam mattress should last between 5 and 7 years.

How do I keep my mattress from sagging?

The best way to prevent your mattress from sagging is making sure you’re buying a high-quality bed. But there are also several tricks that can elongate the life of your mattress, such as rotating it, keeping it on a sturdy bed frame or other type of foundation, or adding a firm mattress topper.

How We Chose These Mattresses

We’ve reviewed more than 220 products in our mattress lab, running each one through tests such as pressure-mapping and measuring motion transfer with a seismometer. From there, we give every bed an overall score based on materials, comfort, support, cooling, and edge support. We also factor in brand performance with categories such as value and warranty.

For a durable mattress, the quality of materials and the level of support serve as two of the most important factors. All of the mattresses that we selected for this roundup scored at least a 4 out of 5 for materials, and 4 out of 5 for support. Click here to learn more about our methodology or jump back to our mattress picks.

Summary: The Best Mattresses That Won’t Sag

Mattress	Best For	Price (Queen)	Coupon	Review
Helix Midnight Luxe	Overall	$1,199	Helix Coupon	Read Our Review
Bear Elite Hybrid	Cooling	$2,305	Bear Coupon	Read Our Review
Nectar	Side Sleepers	$1,298	Nectar Coupon	Read Our Review
Saatva	Innerspring	$1,695	Saatva Coupon	Read Our Review
WinkBed	Hybrid	$1,799	WinkBed Coupon	Read Our Review
Nolah Natural	Organic	$2,099	Nolah Coupon	Read Our Review
Titan Plus	Heavy People	$1,249	Brooklyn Bedding Coupon	Read Our Review
Plank Firm	Firm	$1,332	Brooklyn Bedding Coupon	Read Our Review
Brooklyn Bedding Signature Hybrid	Back Sleepers	$1,332	Brooklyn Bedding Coupon	Read Our Review
Birch (by Helix Sleep)	Combination Sleepers	$1,686	Helix Coupon	Read Our Review

Bridget Chapman

Former Senior Product Editor

About Author

Bridget is a Certified Sleep Science Coach and senior editor here at Sleepopolis. From testing mattresses to writing about various sleep health topics, her goal is to help you get a good night’s sleep. You can also find her in videos on our YouTube channel. Bridget graduated magna cum laude from San Diego State University with a degree in journalism and a minor in English. Before joining the Sleepopolis team, she was a TV news reporter and worked in cities across the country. She loves spending time outdoors, checking out new restaurants, snuggling with her pets, and of course — getting some quality Zzz’s.

Combination Sleeper