10 Best Mattresses That Don’t Sag

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Best Value

Nectar Memory Foam Mattress  

  • Extensive warranty
  • Five layers

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Our Favorite

Zenhaven Mattress

  • Hypoallergenic
  • Targeted support
  • Contours to pressure points

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Most Popular

Loom & Leaf Memory Foam Mattress

  • Multi-layer support
  • Eco-friendly

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When it comes to figuring out what makes a mattress sag, several factors could be at play. Today, we are going to look at some of the major reasons why your mattress might be sagging and what you can do to fix it. Our in-depth review will help you understand what causes mattress sagging so that when you go out to shop for your new mattress, you will know just what to look for. Let’s jump into it!

Mattress Type

There once was a time where one mattress was just as good as any other mattress on the market. As long as it had a good amount of cushion, you were good to go. Over time, the demand for a better night’s rest has paved the way for different types of mattresses to be available. The most common types of mattresses you can find on the market include the following:

Innerspring Mattresses

Innerspring mattresses have a steel coil base and will typically have a high-density foam support layer or series of layers. With innerspring mattresses, the quality of construction is essential.

If the inner springs are made out of low-grade materials and coils, then your mattress will likely sag sooner than you’d like it too. Quality innerspring mattresses will last you a lot longer, so shop thoughtfully.

  • Innerspring mattresses typically have a higher potential for sagging within the first 5 years.
  • The overall lifespan of this type of mattress is 5 to 6 years.

Memory Foam Mattresses

Memory foam mattresses offer a high-density polyfoam support layer. There are different types of memory foam mattresses, with most having a reputation for being a comfortable mattress to lay on.

The higher the polyfoam density is, the more support you will be provided with while sleeping. Memory foam mattresses contour to a sleeper’s body and they hug almost every part of the body that touches the mattress.

  • Memory foam has a low to moderate sagging potential.
  • Memory foam mattresses have an average lifespan of 6 to 7 years

Latex Mattresses

Latex mattresses are one of the latest types of mattresses to hit the market. These mattresses are unique because of their elastic latex construction. This elastic latex is not only comfortable, but it is known for providing excellent support.

You will typically find other layers of comfort in a latex mattress as well. Because of the extreme elasticity, latex mattresses are usually the most resistant to sagging, but again, one that’s of low quality will sag sooner than you’d like it to.

  • Latex mattresses have a low to moderate sagging potential.
  • They have a relatively long life span of 7 to 8 years.

Hybrid Mattress

A hybrid mattress is a mixture of memory foam, latex support, and coil support layers. By using different types of mattress constructions, hybrid mattresses typically don’t sag as quickly as other mattresses. The layers in a hybrid mattress tend to be a lot thicker. Also, there tends to be a lot more emphasis placed on the thickness of the comfort layers.

  •  Hybrid mattresses have a moderate to low sag potential.
  • The lifespan of a hybrid mattress typically ranges between 6 to 7 years.

Gel Memory Foam

Gel memory foam mattresses are a lot like memory foam mattresses, with the difference being that they provide a little more in comfort. With gel memory foam mattresses, an additional layer is made out of a cooling gel that contours to your body. This contour gives you extra support and helps keep you cool at night.

The gel layer is also known for helping to stop the transfer of motion so that even if you were to move around in bed, you wouldn’t wake up someone lying next to you.

  • These types of mattresses have a low to moderate sag potential in their first 5 years
  • The average lifespan of gel memory foam can range between 6 to 7 years

Some mattress types will last you a lot longer than others. For example, memory foams mattresses can last a long time, while a lot of coil and spring mattresses will start to sag sooner.

Memory foam is incredibly flexible and can bounce back a lot quicker than innerspring mattresses might. However, as the quality of mattress construction improves, it really does depend on the brand you purchase and the quality of construction with that mattress type.


The mattress type you have can only do so much to help you avoid having a sagging mattress. If the mattress type is not made with high-quality materials, then it really doesn’t matter.

After all, you can have a memory foam mattress made out of low-density foam and weak comfort layers, and it will still sag a lot sooner than a high-quality innerspring coil mattress. (Even though memory foam has a reputation for having a longer life in terms of sagging).

Inadequate Support

In addition to the type of mattress you have, inadequate support can cause your mattress to prematurely sag. Having a bed frame without a supportive base can cause more stress in the center of the mattress, and with the help of gravity, your mattress could be sagging a lot sooner than it should be.


While some mattresses will last a long longer than other mattresses, most if not all mattresses will begin to sag over time. This is just the nature of the product being used night after night.

Some brands do an exceptional job of warranty coverage to prevent you from dealing with a saggy mattress, but it’s important to note that some sort of sagging will happen over time. For the most part, the best beds will have very little sag and will remain that way for the rest of their lives.

It’s also important to note that all mattresses will get settled into. While it might appear to be sagging or a soft spot, it’s really just the mattress’s way of getting acclimated to your body.

Sleeping Positions

The way you sleep can also affect whether or not your mattress will sag sooner than later. Typically, sagging will happen on the portion of the bed where the heaviest part of your body rests. If you are sleeping with a partner, constant cuddling in the center of the bed can cause your mattress to begin sagging there.

One of the best ways to avoid sagging because of these reasons is by rotating your mattress. Rotating your mattress twice a year can help offset any soft spots from building into a permanent sag.

Consequences of a Saggy Mattress

Dealing with a weakened mattress is just one of the many complications that come with sagging mattresses. Here are some of the major downsides you might start experiencing if you continue sleeping on a sagging mattress.

Overheating While Sleeping

When you’re sleeping, your bed will naturally collect your body heat, often making you feel hotter than normal when you are sleeping. When you throw in a saggy mattress, the heat buildup accumulates, and for some people, this can lead to a restless and sweaty sleep session. As your mattress sags, there is restricted airflow through the mattress that will continually heat you up as you sleep.

Aches in Your Body

Everyone has pressure points in their body, and if your mattress is not resisting those pressure points properly, this can lead to an uncomfortable sleep. You often might not notice it at first, but when you wake up the next morning, you might find unexpected cricks in your neck and other aches and pains in your joints. It’s important that your body receives the right amount of support, and a sagging mattress can keep this from happening.

Noisy Mattress

Springs and coils that are beginning to lose their strength will creak and groan louder then they should over time. As the springs and coils shift under your weight, this is one of the telltale signs that the mattress can no longer support you properly. When it comes to foam and latex mattresses, noise is not much of an issue, but you will still be able to feel and see the sag developing.

Restless Nights

If you continuously sleep on a sagging mattress, then the noisy springs, the aches in your body, and the overheating can reach a point where you find yourself having sleepless nights over and over again. If left untreated, these sleepless nights can lead to other sleep issues, including sleep apnea, insomnia, snoring, and other sleep-related issues.

Understand Your Mattress Warranty

Many mattresses come with some sort of warranty with some brands offering exceptional warranties that cover sagging, soft spots, and other functionality issues. Whenever you purchase a mattress, it’s essential to understand the warranty details and what it will protect because while some warranties say they cover sagging, it’s typically within limits.

Many mattress warranties have a specific measurement that they use to determine whether or not your mattress is sagging. Typically, many warranties consider one inch or deeper to constitute sagging, but there are mattress warranties that range from half an inch to 2 inches.

Follow Your Warranty’s Conditions

Another aspect of understanding your warranty is knowing the external conditions in which your warranty will cover a sagging bed. For example, When you purchase a mattress, the warranty may indicate specific support types needed to preserve your mattress’s life.

If your warranty calls for a bed frame support with a certain number of legs on each side and a certain distance between each slat, then you need to adhere to those conditions. If you do not, there is a chance that your mattress may not be covered under your warranty.

Filing a Claim

Filing a warranty claim depends on the warranty type, the manufacturer, and the mattress brand. Typically, most warranty claims will ask for a description or photographic evidence of the claim. Some warranties will even dispatch a representative to your home to examine the product. If your claim matches your mattress defect, you will typically be covered by your warranty.

Keep the Bed Tag Intact

When you purchase a new mattress, it will come with a tag that provides you with the bed’s manufacturer number and any relevant information to that bed. It may also include information relevant to the bed’s construction, materials, or state regulations.

The bed tag is typically located on the bottom, right corner of your mattress. Your bed tag needs to be intact with nearly all warranties, and removing the bed tag will most certainly void your warranty. Other things that can void your mattress warranty include

  •  Not being the original owner
  •  Setting up your mattress with improper support
  •  Accidental stains caused by you

What Does a Mattress Warranty Cover?

Typically, your mattress will cover issues including:

  • Coils or Springs that are popping out
  • Sagging as indicated by the manufacturer’s specific measurements
  • Foam layers bunching up
  • Seams coming out of the mattress
  • Any issues related to the box spring that was not caused by the customer
  • Other physical defects not caused by the customer

What Does a Mattress Warranty Not Cover?

  • Issues with personal comfort level
  • Damages that were caused by the customer
  • Accidental spills on the mattress
  • Defects while moving the mattress from one location to another
  • Normal wear and tear of your mattress (this definition differs between warranties)

It’s also important to understand that all mattresses will develop soft spots and sagging over time. If your bed begins to dip a bit or have soft areas, this necessarily isn’t cause for concern because, like most products, the mattress is getting accustomed to the user.

How to Choose the Best Mattress to Avoid Sagging

When you start shopping for the best mattress to avoid sagging, you should pay attention to a couple of things. Here are some of the top features are considerations you should keep in mind when purchasing a new mattress.

Purchase the Right Size Mattress

If you are sleeping on a full-size or queen-size mattress when you need more room or support, you could be wearing out your bed faster than you should need to. This is most common with couples who purchase a queen-sized mattress when they really should be sleeping on a king. The added weight concentrated towards the center of the bed because of a lack of space to move around can cause premature sagging in your mattress.

Find the Right Firmness for Your Body

Different people require different firmness levels in their mattresses. If you have a mattress that is not firm enough for you or too firm for you, you may find yourself tossing and turning more than usual to get a good night’s rest. Because of this constant movement, you can put unnecessary strain on your mattress and cause it to sag sooner rather than later.

Someone who purchases a medium-firm memory foam mattress may toss and turn more than they would have if they purchased a firm memory foam mattress. This constant stress on the foam can lead to the weakening of its flexibility. The same goes for an innerspring mattress. The more pressure you put on the coils, the sooner the coils will lose their flexibility and support.

Purchase the Right Support for Your Mattress

Choosing the best mattress to avoid sagging does not stop at just the mattress itself. It also includes the structural support you use for your mattress. When you purchase a mattress, you will also need to have a box spring to support it. The box spring is the first line of support to keep your mattress from sagging. Most types of mattresses will also come with a recommended box spring suited for that mattress.

Additionally, having the right type of bed frame is crucial to whether your mattress will sag or not. Heavier mattresses like king-sized sets will need sturdy frames that offer more support leg wise and slat wise. The slats should also be a certain distance apart from one another to give you ample support.

  • Twin beds will typically have four legs, one on each corner, and there will usually be Flats with a distance of 4 to five inches between them.
  • Full-size beds will sometimes have four legs, but it can be helpful to have another supportive leg in the middle on each side. The slats should also be about 4 to 5 inches apart from one another.
  • Queen size beds should have a support leg on either side of the bed as well as additional support legs underneath the bed on the bottom of the slats. Depending on your firmness level, slats can be anywhere from 4 to 6 inches apart.
  • Because king-size beds are larger, they will naturally need the most support. Having three or four legs of support on either side is adequate, but there should be another strip of leg support across the top and bottom of your bed frame. Depending on how “springy” or firm you want your mattress to be, slats can be spaced out anywhere from 4 to 6 inches.

Many experts will recommend that you have additional leg supports underneath the bed as well. Additional leg supports underneath the bed are best for supporting not only the mattress but the slats too.

Invest in a High-Quality Mattress

When you are looking for the best mattress that won’t sag, it’s important that you invest in a high-quality bed. It might be a little bit pricier than other mattresses on the market, but the price can be a good indicator of the quality of material used. The higher the quality, the longer your mattress will last you. Typically, the higher the quality, the better your warranty coverage will be as well.

The Best Mattresses That Doesn’t Sag

Now that you know what to look for in a great mattress, it’s time to dig into the nitty-gritty. Here’s our list of the best mattresses that don’t sag.

Best Overall Zenhaven Mattress

Overall, in terms of comfort, support, and quality, the Zenhaven Mattress is one of the best beds when it comes to shopping for an excellent mattress that does not sag. Talalay latex is one of the best materials when it comes to elasticity and flexibility. It will contour to your pressure points, and because it bounces back, it is more resistant to sagging, unlike other mattresses on the market.

This mattress offers breathable sleep thanks to the natural latex and organic cotton. Plus, a 5-Zone Layer provides targeted support allowing the mattress to be softer where you need and firmer where you require.

Lastly, if you suffer from allergies or have certain skin sensitivities, this mattress is the one for you as it is naturally hypoallergenic, antimicrobial, and free of harmful chemicals.

Runner Up Loom & Leaf Memory Foam Mattress

The Loom and Leaf Memory Foam Mattress provides support that feels good for your body and keeps your mattress firm for longer. This mattress brand prides itself on delivering quality mattresses with the best materials, all while knocking out the competition in terms of price.

This Loom and Leaf mattress provides several layers of protection, including the quilted organic cotton cover, the gel cooling layer that keeps you from overheating at night, and the premium memory foam that gives you the iconic Loom and Leaf comfort. This leather foam is five pounds of eco-friendly material and can provide enough comfort that you would not need to use a foam topper with your mattress.

The layer that provides the necessary support is the multi-layer support located about halfway into the mattress. The multi-layer support is made out of a high-density foam base and transition layers that keep your mattress from sagging even after prolonged use.

The Loom and Leaf Memory Foam Mattress is available in both relaxed firm and firm options. Either way, this eco-friendly mattress is sure to be a great fit for someone looking for a quality mattress that delivers years of comfort and support.

Honorable Mention Nectar Memory Foam Mattress  

The Nectar memory foam mattress offers five layers of comfort and support. And these layers work together to give you a reliable mattress that not only doesn’t sag but is supreme in comfort. The base layer provides stability and reinforced support that prevents sagging.

It’s concealed with additional support, thanks to the bottom mattress cover. The next layer is the adaptive response transition layer that keeps you stable so that you don’t feel like you are sinking into the mattress when you sleep on it.

The next three layers are what provide additional comfort and breathability, so you don’t get overheated during the night. These include the gel memory foam and the quilted cooling Tencel mattress cover.

The support and comfort provided by the Nectar Memory Foam Mattress has won accolades from USA Today and the Sleep Foundation, just to name a few. Additionally, Nectar provides a rather extensive warranty on all their beds.

Honorable Mention DreamCloud Premier

The Dreamcloud Premier Mattress lives up to its name as one of the best mattresses in terms of comfort, quality, and support. Whether you sleep on your back, side, or belly, the push back support is strong yet luxurious.

The construction of the mattress is a pocketed innerspring coil system. This coil system helps with reducing motion transfer as you sleep, leading to a longer night’s rest. On top of this support system, the gel-infused memory foam does a great job keeping you cool and comfortable throughout the night. The memory foam adjusts your body’s shape so that you can ease the pain of your pressure points.

Lastly, the Dreamcloud Premier stands up against other mattresses on the market in terms of quality. The Euro Top is made out of a cashmere blend that is incredibly soft and comfortable to the touch. Laying down on the mattress really gives you the feeling of sleeping on cloud nine.

Honorable Mention Amerisleep AS3

The Amerisleep AS3 might be the best mattress for you if you are someone who is looking for comfort, quality, and affordability. Seeing as this is the brand’s number one selling mattress, it’s no wonder why people love it.

One of the highlighting factors of this mattress is the Bio-Pur technology. With this deviation from traditional memory foam, Bio-Pur provides a breathable and cooling nights rest thanks to the open cell structure that is not found in traditional memory foam.

Some of the advantages of Bio-Pur include allowing air to flow more freely through the mattress so that your heat does not build up throughout the night. You can also expect to find relief in painful pressure points and stability and support that keeps it from sagging.

In fact, Amerisleep is so committed to a sturdy mattress that this specific mattress is covered with an industry-leading 20-year warranty that guarantees no sagging or the development of soft spots. While traditional memory foam mattresses can be great, the use of the Bio-Pur technology really does allow this mattress to be one of the best beds that won’t sag.

Honorable Mention Puffy Lux Hybrid 

The Puffy Lux Hybrid is one of the best mattresses when it comes to comfort. This mattress is available in a Lux edition that features only memory foam, and a Lux Hybrid edition that features memory foam and coils. Either edition conforms nicely to your body so that you have adequate support while you are sleeping. You will find relief from pressure point aches so that you get a better night’s rest.

Breathability and cooling is another aspect where this mattress shines. The trademarked Puffy Lux Hybrid Cooling Cloud layer works to keep air flowing through and out the mattress so that overheating is not something that you deal with.

Lastly, this mattress is hypoallergenic, so there are reduced allergy triggers and dust buildup. The mattress comes with a lifetime guarantee, so even if you find that there are issues with your mattress, the brand is responsive to getting you back to a comfortable night’s rest.

Honorable Mention: Saatva Classic Mattress

The Saatva Classic Mattress is a comfortable and durable mattress that was handcrafted to provide optimal support while sleeping. The Classic Mattress features a coil-on-coil innerspring with a mixture of foams for comfort. The plush Euro top is soft on joints and supports common pain areas, including the back, hips, and shoulders.

Your spine will thank you for this mattress because of the Lumbar Zone support technology used. This technology relies on the active wire support that runs through the center of the mattress. This additional support is what keeps the mattress from sagging as well.

If you are looking for a mattress that can give you optimal relief, this best selling chiropractic approved classic Saatva mattress may be the best fit for you.

Honorable Mention: Avocado Green Mattress

The Avocado Green Mattress has won its fair share of accolades as being one of the best mattresses that not only does not sag but is great for the environment as it is eco friendly.

The mattress features a certified organic latex that provides cushion, comfort, and support. Other organic materials used include wool and cotton. There are no harmful toxins, making this one of the best mattresses to invest in if you are looking for a hypoallergenic bed.

Underneath the different comfort levels, the mattress is supported by 1,414 pocketed support coils that will keep you comfortable throughout the night without worry of sagging.

Honorable Mention: GhostBed Flex Mattress

GhostBed promises a supernatural level of comfort when sleeping, and the GhostBed Flex Mattress does not disappoint. This mattress features a mixture of supportive coils and memory foam that conforms to your body as you sleep. It offers an ample amount of firmness so that you can the right balance of cushion and support.

Though the mattress contours to your body, overheating will not be an issue thanks to the plush quilted cover that features an airflow technology and gel foam layer that works against heat buildup as you sleep.

The GhostBed Flex Mattress speaks for itself as it has won accolades from the Sleep Foundation, Mattress Advisor, and other notable sleep publications.

Best Mattress That Doesn’t Sag Winner: Saatva Latex Hybrid 

If you’re looking for quality and comfort alongside the best mattress that does not sag, then the Saatva Latex Hybrid mattress might be a good fit for you. This organic mattress provides uplifting support thanks to the responsive latex layer and high quality, certified organic cotton, and wool. This latex layer is credited for the mattresses’ ability to provide exceptional pressure relief.

An added benefit of the Talalay latex used is that not only is it incredibly elastic, but it is resilient and durable and will last you for quite some time. Even after years of use, the mattress will still provide you with the adequate support that is often lost with saggy mattresses.

Lastly, this is one of the best mattresses in terms of your health. This latex hybrid mattress is hypoallergenic, antimicrobial, and does not contain any harmful chemicals. The products in the mattress consistently meet the highest standards when it comes to organic certification.

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