Best Mattresses That Won’t Sag (2025), Support That’s Built to Last

If someone asked you to envision a heavy-duty bed, you would probably picture one with a thick mattress topper, several supportive comfort layers, and a luxurious feel. The Helix Midnight Luxe beats any mattress we could dream up, thanks to its combination of pressure-relieving memory foam, supportive innerspring coils, and excellent performance across all our testing categories. After taking the Midnight Luxe for a spin, our testers gave it 4 stars or more in edge support, pressure relief, and cooling.

Edge support is one of the first things we assess when determining the durability of a mattress and its ability to withstand sagging. A strong perimeter is often an indicator of longevity, according to Dr. Raj Dasgupta.

“When shopping for a durable mattress, look for models that offer strong edge support, a generous warranty, and positive customer reviews,” Dr. Dasgupta said. “These mattresses are more likely to withstand wear and maintain their structural integrity over time.”

Mattress tester Sosha Lewis gave the Helix Midnight Luxe an impressive 4.8 out of 5 for edge support. Despite its slow-sinking pillow top, Sosha said the perimeter of the Midnight felt just as secure as the center. In other words, this mattress should hold up for a long time without any noticeable sagging in areas that are typically prone to it.

“The Midnight Luxe has fantastic edge support,” Sosha said. “When lying down along the side of the mattress, I felt terrific. I didn’t feel any sinkage and felt secure.”

However, durability matters less if the mattress is uncomfortable. Fortunately, its pressure-relieving foams make the Helix Midnight Luxe one of the most comfortable mattresses our testers have tried. Sosha gave it a 4 out of 5 for pressure relief after running it through our pressure map test, which uses a specialized pressure-mapping mat to detect tension buildup in the body. Her test results showed only a small amount of pressure around the hips and shoulders, meaning it should be a good fit for most folks with joint or back pain.

To confirm our test results, we also invited our chief medical product tester and licensed physical therapist, Dr. Joe Tedesco, to test the Helix Midnight Luxe and offer his feedback. Dr. Tedesco was impressed with the Helix mattress in both positions, but noted that it was ideal for side sleeping.

“This is a great mattress for side sleepers,” said Dr. Tedesco. “The first thing I notice is that I can feel that my feet are falling into the mattress easily, which lifts my knees a little higher, and creates a weightless feeling.”

My colleague Emily Schroeder, a side sleeper who has the Midnight Luxe at home, also thinks it’s the perfect fit for this sleeping position. “I’ve noticed that I wake up less in the middle of the night, and it is easier for me to fall asleep on my side,” she said. “I also no longer wake up with neck pain.”

Sosha also praised the Midnight Luxe’s cooling features, awarding it a perfect 5-star rating in this category. Mattresses with plush top layers are typically prone to overheating; however, Helix incorporated cooling fibers in the cover layer of the Midnight Luxe to help keep things crisp and comfortable.

“The surface of the Helix Midnight Luxe is surprisingly cool to the touch,” Sosha said. “While lying on it, I couldn’t tell if it was heating up beneath me.”

Sosha’s only complaint about the Helix Midnight Luxe was that its edge support tapers off toward the foot of the bed. However, this difference in support was barely noticeable and shouldn’t be a problem for sleepers who sit on the corners to lace their shoes in the morning.

Read our full Helix Midnight Luxe mattress review to learn more. If you prefer a firmer sleep surface, check out the Helix Dawn Luxe instead.

The Bear Elite Hybrid is a high-performing mattress designed with athletes in mind. Like any dedicated competitor, it holds strong and refuses to sag or give in, while delivering consistent comfort across the entire mattress surface. This mattress blends pressure-relieving memory foam, durable innerspring coils, and advanced cooling technology to offer a superior sleeping experience. Mattress tester Sosha Lewis awarded it 4 stars or more in cooling, motion isolation, and edge support.

If you have trouble cooling down at bedtime or share a bed with a partner who tends to overheat, the Bear Elite Hybrid has a few tricks up its sleeve to help you bring down your body temperature. Among its cooling features are copper-infused memory foam layers and a cooling cover embedded with phase change material. The former helps wick away moisture while the latter helps absorb and release body heat.

During testing, Sosha was particularly impressed with its performance on our thermal gun test. For this test, she used a thermal gun to measure the surface temperature of the Elite Hybrid before and after lying on it for five minutes. She praised its persistent cool-to-the-touch feel and noted only a slight increase after five minutes of uninterrupted rest. She gave the Bear Elite Hybrid a near-perfect 4.5 out of 5 in the cooling category.

“I didn’t notice the mattress heat up while I was lying on it,” Sosha said. “The temperature increased by less than 5 degrees, which is quite impressive. It was very cool to the touch when I initially lay on it.”

Another feature couples will appreciate about the Bear Elite Hybrid is its strong motion isolation. Motion isolation refers to a mattress’s ability to dampen motion and isolate it to one side of the bed. Sosha and her colleague Cait Giddings, gave this mattress 4.7 out of 5 in this category after testing it together.

To test its motion isolation, Sosha lay blindfolded on one side of the mattress while Cait tossed and turned on the other side. Overall, Sosha was impressed with how little she could feel Cait move.

“I could tell when Cait sat down and got back up, but it was minimal,” Sosha said. “Overall, this mattress had great motion isolation. While I could tell when Cait got in bed, I couldn’t detect her moments when tossing and turning or getting out of bed.”

At 14 inches tall, it is not hard to see that the Bear Elite Hybrid is more robust than your average mattress. Its layered construction includes individually encased coils, reinforced edge coils, and high-density memory foam. These support layers provide sleepers with reliable edge support and preserve the bed’s shape over time.

During testing, Sosha gave the Bear Elite Hybrid an edge support score of 4.4 out of 5. She had no trouble lying or sitting along the perimeter of the mattress; however, she noted that its height made it difficult for her to plant her feet on the floor. Because the mattress is so tall, she wouldn’t recommend it to shorter sleepers with mobility concerns.

The only other drawback to this mattress is its price. As a luxury mattress, the Bear Elite Hybrid is a little pricey at $2,427 for a queen-sized model.

Read our full Bear Elite Hybrid mattress review to learn more. For a similar mattress at a lower price, check out the Bear Star Hybrid instead.

Side sleepers seeking a sag-resistant mattress need one that strikes a balance between firm, durable support that keeps their spine aligned and soft, comfortable contouring to cradle their shoulders and hips. Fortunately, the Nectar Classic straddles this line perfectly with deep pressure-relieving memory foam and dense support foam that reinforces its edges and contributes to its longevity. During testing, I gave this mattress a 4 out of 5 or higher in the edge support and side-sleeping pressure relief categories.

Memory foam mattresses are often more prone to sagging because they lack the supportive pocketed coils that innerspring and hybrid mattresses do. The Nectar Classic bucks this trend, thanks to its base layer of dense support foam. Thanks to its supportive memory foam, I was able to sit and lie along the perimeter of the bed without feeling unsteady or rolling off. I gave this mattress a 4 out of 5 in the edge support category.

However, the Nectar Classic isn’t so dense that it becomes uncomfortable for side sleepers and those who need extra cushioning around their shoulders and hips. After inviting a few of my colleagues to help me test the Nectar, I awarded it a 4 out of 5 for side-sleeping pressure relief. 

Mattress tester Sosha Lewis was impressed by how comfortable it felt while lying on her side. She said that, despite it being firmer than your average memory foam mattress, it still provided enough gentle contouring around her hips and shoulders to feel comfortable in the side-sleeping position.

“I think this bed is great for side sleeping,” Sosha said. “It’s firm for an all-foam bed, but I sink into it further the longer I lie here. My hips are in line with my shoulders, which creates fantastic spinal alignment. I feel minor sinkage at my hips, which is nice.”

However, there are a couple of things to keep in mind about the Nectar Classic before you pull the trigger on buying it. While I think the Nectar offers solid pressure relief for average-weight side sleepers and those who weigh over 230 pounds, this bed will likely feel too firm for side sleepers under 130 pounds. These sleepers should opt for a softer memory foam mattress.

I also wouldn’t recommend the Nectar to combination sleepers who frequently toss and turn to get comfortable. The Nectar demonstrated strong responsiveness for a memory foam model; however, I still think these sleepers will fare better on a hybrid mattress.

Need to know a little more about the Nectar before making your decision? Read our full Nectar Classic mattress review to see how it performed across the board. If you’re a lightweight sleeper searching for a softer mattress, consider getting the Saatva Rx instead.

If long-term, sag-resistant support is your top priority, then mattresses with a traditional innerspring feel might be your best bet. The Saatva Classic is one of the most reliable innerspring options I have tested, thanks to its unique dual-coil system and reinforced perimeter. Livvi DiCicco and I awarded the Saatva Classic 4 stars or higher in edge support, responsiveness, and cooling.

Edge support is one of the best indicators of longevity because a mattress with a reinforced perimeter is less likely to sag over time. The Saatva excels in this category, earning a perfect 5 out of 5 from Livvi and me during testing.

To test its edge support, Livvi and I placed a stack of weights near the perimeter and saw it compress just 3 inches, which is remarkably minimal sinkage for a mattress with a plush Euro top.

Its sag-resistant construction also lends itself to superior responsiveness, which makes it easy to switch positions without getting stuck in its plush cover layer. Livvi and I gave it a perfect 5 out of 5 for responsiveness, which is a significant benefit for combination sleepers who want a bouncy surface that makes it easy to change positions on.

Finally, its cooling is another area where the Saatva Classic shows solid performance. Mattresses with plush toppers often struggle to disperse heat. However, this one only warmed by 7.8 degrees during our thermal gun test, where we measure the temperature increase after lying on it for five minutes. That’s impressive for a bed with a dense foam comfort layer, and we rated it a 4 out of 5 in cooling.

The dual coil design’s only tradeoff is motion isolation. Livvi and I gave it a 2.8 out of 5 in this category, which could be a concern for light sleepers sharing the bed with a jittery partner or pet.

“I have this bed at home, and it definitely has a springy feel,” Livvi said. “I’ve noticed that every little movement transfers across the surface. When my partner moves around, even the slightest shift wakes me up.”

It is also worth noting that the mattress may feel too firm for side sleepers. During testing, our chief medical product tester, Dr. Joe Tedesco, warned that the coil-on-coil construction can create pressure points in this position.

Read our full Saatva Classic mattress review for more details on its performance and construction. If you’re interested in a sag-resistant mattress that’s soft enough for side sleeping, check out the Titan Plus Elite instead.

With a hybrid mattress, sleepers get the best of both worlds. A quality mattress in this category will offer the deep contouring of memory foam and the consistent support of a traditional innerspring mattress. The innerspring coils in hybrid constructions also add to their durability. The Luxury Firm WinkBed encapsulates the best of what this type of mattress has to offer. Mattress tester Riley Otis praised the WinkBed’s edge support, back-sleeping pressure relief, and motion isolation, awarding it 4 stars or more in these categories.

During testing, Riley praised the WinkBed’s unwavering support, giving it a near-perfect 4.4 out of 5 for edge support. Sleepers can be confident that the WinkBed’s reinforced perimeter will withstand sagging for years to come.

Aside from contributing to its durability, this bed’s impressive edge support allows sleepers to rest along the sides without feeling unsteady or falling off the mattress. Robust edge support also provides a firm surface for folks with mobility concerns to bear down on in the morning.

“I felt very well supported when lying directly on the edge of the bed,” Riley said. “I thought the edges felt just as strong as the center of the bed, and I didn’t feel the mattress sagging anywhere.”

The WinkBed’s supportive construction also offers deep pressure relief to back sleepers. Riley gave its back-sleeping pressure relief a strong 4.3 out of 5 because its supportive innersprings elevated her hips and lower back to keep her spine in comfortable, neutral alignment.

“This mattress is an excellent choice for back sleepers,” Riley said. “In this position, I was able to achieve proper spinal alignment. I felt comfortable and didn’t notice any pressure building. I enjoyed the soft feel of the pillow top, which was balanced nicely by the firmer support system below.”

The WinkBed also performed surprisingly well on our motion isolation tests. Motion isolation refers to how well a mattress dampens motion and isolates it to one side of the mattress, which is particularly important for folks who share a bed with a restless partner or pet. Riley gave it another 4.3 out of 5 in this category due to its stellar performance on our couple’s test. For this test, one tester lies blindfolded while another tester tosses and turns on the other side to see how much movement ripples across the mattress.

“I could tell that someone else was in the bed with me, but their movements didn’t affect my side too much,” Riley said. “The pillow top did a nice job absorbing motion at the source and preventing it from traveling too much.”

However, the WinkBed didn’t excel in every category. Its performance was only average in the cooling and responsiveness categories. During testing, Riley didn’t overheat, but she could feel its plush pillow top warming up. She also found herself struggling a bit to switch between different sleeping positions, which could be a dealbreaker for combination sleepers who toss and turn frequently to get comfortable at night.

Want to get to know the WinkBed a little better? Read our full WinkBed mattress review to learn more. If you’re looking for an alternative with better cooling, check out the DLX Classic instead.

The Nolah Natural is our pick for the best organic mattress because it features eco-friendly, made-to-last materials. As Dr. Dasgupta, our chief medical advisor, said, “Natural latex and organic cotton are known for offering exceptional support, comfort, and durability in mattresses.” The Nolah Natural delivers here, earning a 4 out of 5 or higher in categories like edge support and responsiveness.

While testing the Nolah Natural, Riley Otis was impressed with how supportive its reinforced edges felt. She gave the Nolah Natural a stellar 4.8 out of 5 for edge support, because its durable perimeter kept her elevated and supported, regardless of what position she lay in. She noted that there was barely any sinkage while lying along the side of the mattress, which indicates that this mattress is unlikely to sag.

“I was actually really impressed with the edge support lying down,” Riley said. “I didn’t feel any significant sinkage or sagging, and I felt just as supported as the center of the bed. This is also a plus for couples who like to fully spread out.”

The Nolah Natural’s sturdy innerspring coils also make it a highly responsive mattress. These innerspring coils, coupled with the naturally bouncy latex, give the surface of this mattress a buoyant feel that makes it easy to move around and change sleeping positions. Riley gave the Nolah Natural a perfect 5 out of 5 in our responsiveness category because of how easily she was able to stay mobile on this bed.

“It was very easy to move around on this bed,” Riley said. “The Nolah Natural is extremely bouncy, and this aided my mobility. I felt like I could simply bounce from one position to another. I will say that the cover isn’t super taut; it feels a little loose and moves with the body.”

The Nolah Natural showed exceptional performance in edge support and responsiveness; however, its motion isolation and cooling left us wanting more. Its cooling was only average, which shouldn’t impact most sleepers, but hot sleepers would fare better on a mattress with additional temperature-regulating features. 

With a 2 out of 5 rating, motion isolation was its weakest category. Folks who are easily disturbed by their partner’s or pet’s movements should avoid this mattress. They will likely feel everything their bedmate does on this bed. I would recommend a mattress with a slow-sinking feel to limit motion transfer.

Head over to our full Nolah Natural mattress review to learn more. For something with better motion isolation, check out the Leesa Original instead.

Sleepers with larger bodies require a durable mattress that will not buckle under pressure, and the Brooklyn Bedding Titan Plus provides just that. The rock-solid Titan mattress is perfect for those seeking consistent support and long-lasting resistance to sagging. Our testers showered the Titan with 4.5-star ratings (or higher) in crucial categories, including edge support, responsiveness, and motion isolation.

Like many of the other mattresses on this list, the Titan Plus has an ultra-sturdy construction comprised of high-density foam and a robust innerspring coil support system. However, it ramps it up tenfold to support folks who weigh 230 pounds or more. Our mattress tester, Sosha Lewis, was thoroughly impressed by how solid and supportive the mattress felt across the entire surface during testing and awarded the Titan a 4.6 for edge support, which is an excellent indicator of long-term durability.

“Whether I was lying flat or changing sleeping positions, I felt very secure on the perimeter of the Titan Plus,” Sosha said. “I found it easy to switch positions on the edge, and I wasn’t afraid of rolling out of bed when I flipped onto my side.”

The Titan’s consistent support also contributed to exceptional pressure relief for heavier side sleepers. According to our chief medical product tester, Dr. Joe Tedesco, he was pleasantly surprised at how effective the Titan Plus was at alleviating pressure buildup in his shoulders while lying on his side.

“I normally prefer to lie on my back, so I was surprised to find myself more comfortable on my side on this mattress,” said Dr. Tedesco. “I was looking for pressure buildup in my shoulder, but I didn’t feel much, if any, at all.”

Motion isolation and responsiveness, two features that can rarely coexist in any mattress, also stood out. The Titan earned a rare 5 out of 5 in both categories, making it a strong pick for heavier combination sleepers or sleepers with larger bodies who share a bed with a restless partner.

“My husband is someone who tosses and turns constantly, and because of this, I pay close attention to how well a mattress prevents motion from traveling from one side to the other,” said Sosha. “So trust me when I say that this mattress offers the gold standard for motion isolation.”

One thing to be aware of is that the Titan Plus is incredibly firm by design to support sleepers who weigh 230 pounds or more. This may cause the mattress to feel too stiff for lighter sleepers or those who suffer from joint sensitivity. Sleepers in these categories should opt for a softer option to cradle high-pressure areas, like the hips and shoulders.

Head over to our full Titan Plus mattress review for a complete performance breakdown. If you’d prefer a slightly more cushioned feel without compromising support, consider the Titan Plus Luxe instead.

As its name suggests, the Brooklyn Bedding Plank Firm is one of the firmest mattresses available. The Plank is also one of the most durable options that we have tested, thanks to its reinforced support. This flippable mattress offers two distinct firmness levels, but the extra-firm side stood out the most to us during testing. This mattress is ideal for sleepers who weigh 230 pounds or more and want rock-solid structure and reliable edge-to-edge support. Our mattress testers gave it 4 stars or more in both edge support and cooling.

While not necessarily a steadfast rule, firm mattresses tend to be more resistant to sagging due to their consistent support and reinforced edges. Fortunately, this was true for the Plank Firm, as mattress tester Sosha Lewis was particularly impressed with how well it held up along the perimeter. She gave the extra-firm side a 4.4 out of 5 for edge support, noting how stable it felt in all sleeping positions while lying along the perimeter.

“I felt very supported on my side, back, and stomach,” Sosha said. “I wasn’t afraid of rolling out of bed in any position.”

Memory foam mattresses are known for trapping body heat, which can make them feel warmer than other types of beds. Knowing this, the Plank also performed surprisingly well in our cooling tests. During testing, Riley Otis used a thermal gun to measure the Plank’s increase in temperature after lying on it for five minutes. She found that the mattress only warmed by 5 degrees on the extra-firm side. That’s an impressive result for a dense memory foam mattress designed to maintain its shape.

“While I don’t think the bed feels particularly cool to the touch, it doesn’t feel stifling either,” Riley said. “I didn’t notice the Plank heating up too much when lying on it.”

However, this bed naturally falls into a somewhat niche category that could alienate some sleepers. While its ultra-firm surface provides consistent support and resists sagging, it isn’t soft enough to cushion high-pressure areas. Side sleepers or those with joint pain will fare better on a more adaptive mattress that offers better pressure relief.

Over on its firm side, motion isolation was another weak point. It scored a 3.7 out of 5 in our testing, meaning anyone snoozing next to a restless person or pet might notice more movement across the surface.

Read our full Plank Firm mattress review for a closer look at its pros and cons. If you’re looking for a similarly supportive mattress that’s just a smidge softer, check out the Plank Firm Luxe instead.

Back sleepers seeking long-term support that won’t quit should look no further than the Brooklyn Bedding Signature Hybrid mattress. The high-performing Signature Hybrid is durable, sag-resistant, and comfortable. During testing, I gave it 4 out of 5 or higher in both edge support and cooling, which are two indicators of how well this mattress maintains its structure and comfort over time.

The plush memory foam and innerspring coils deliver a feel that is simultaneously supportive and responsive. I gave the Signature Hybrid’s robust edge support a 4.3 out of 5 because its strong perimeter is a good indicator that this mattress preserves its shape over time. Its edge support is also particularly beneficial for back sleepers who tend to spread out or shift positions without wanting to feel like they are sinking or rolling off the bed.

However, the real star of the show for back sleepers is its ability to distribute weight. When I invited our chief medical product tester, licensed physical therapist Dr. Joe Tedesco, to share his thoughts, he was impressed with how beneficial this bed is for back sleepers.

“This mattress is very supportive, and I can feel it eliminating pressure in my back. I’m not feeling significant tension anywhere, and my hips are very supported,” said Dr. Tedesco.

I also loved how crisp this mattress felt during testing, and gave it a 4.5 out of 5 in cooling. Its lightweight cover kept me comfortable throughout testing, and its breathable innerspring system helped facilitate airflow. After recording its temperature before and after lying on it for five minutes using a thermal gun, it detected a very minor six-degree temperature difference.

However, the Signature Hybrid’s responsiveness and motion isolation were only average in my testing, so I wouldn’t recommend it to combination sleepers or folks who sleep with a restless pet or partner.

Check out our full Brooklyn Bedding Signature Hybrid mattress review to see how it performed across other testing categories. If you’re seeking stronger motion isolation, I recommend getting the Silk & Snow Hybrid instead.

The Birch Natural is a latex mattress that offers durable, responsive support necessary for combination sleepers. This mattress is constructed with high-quality materials that provide a firm yet buoyant feel and consistent support, whether you’re on your back, side, or stomach. Our testers gave the Birch a 4 out of 5 or higher in edge support, cooling, responsiveness, and pressure relief.

A combination of natural Talalay latex and bouncy innerspring coils is at the core of the Birch’s sag-resistant design. These materials create a responsive surface that can swiftly adapt to movement without compromising its shape or structure. Tester Dan Caffrey praised its reliable edge support and gave the Birch a 4-star rating after lying along the sides in every sleeping position.

“I never felt like I was going to fall off on either my back, side, or stomach,” Dan said.

The Birch Natural also scored a perfect 5 out of 5 for responsiveness, which is perhaps the most important category for combination sleepers, as it determines how easily they can switch positions on a mattress. During testing, Dan was incredibly impressed with its springy surface that enabled him to flip from his back to his sides to his stomach with minimal effort.

Aside from edge support and responsiveness, combination sleepers can also benefit from its balanced pressure relief. Dan and his fellow mattress testers found that it effectively alleviated pressure in their shoulders, hips, and lower backs, in both the back and side-sleeping positions. Dan and Dr. Joe Tedesco, our chief medical product reviewer, gave it an average score of 4.2 out of 5 for pressure relief.

“This bed is a great option for back and side sleepers,” said Dr. Tedesco. “However, I think it is fantastic for side sleepers because it is soft and supportive. On my side, I feel very relaxed and I don’t feel any pressure building up.”

Hot sleepers will also benefit from this bed’s latex hybrid construction, which helps it run naturally cool without any specialized features (like cooling gel infusions and phase change material). Dan recorded only a slight increase in temperature after lying on the mattress for an extended period and awarded it another 4 out of 5 in the cooling category.

“The Birch felt neutral and comfortable to me during testing,” Dan said. “Unless you sleep abnormally hot, I don’t think you have to worry about overheating on this model.”

Like most mattresses, there are a few drawbacks. Its motion isolation is only average, so if your restless partner or pet frequently disrupts your sleep, you might prefer a memory foam mattress with a slow-sinking feel. Latex mattresses are also heavier and more unwieldy than memory foam and hybrid models, so it may take some effort to move the Birch Natural to your bedroom.

Read our full Birch Natural mattress review to get all the details before making a decision. For a less bulky option with a slow-sinking feel, check out the Bear Original instead.