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- Best king-size mattress for back pain: Saatva Solaire Adjustable Mattress
- Best king-size mattress for stomach sleepers: Helix Dawn
- Best king-size memory foam mattress: The Nectar Premier Memory Foam Mattress
- Best luxury king-size mattress: Tempur-Pedic TEMPUR-Cloud
- Best king-size mattress for side sleepers: Tuft & Needle Original Mattress
- Best king-size mattress for back sleepers: Puffy Lux Hybrid Mattress
- Best king-size mattress for people with more weight: The WinkBed Plus
- Best king-size hybrid mattress: Dreamfoam by Brooklyn Bedding Arctic Dreams Cooling Gel Mattress
- Best firm king-size mattress: Plank by Brooklyn Bedding
- Best king-size pillow top mattress: Avocado Green Mattress (with added pillow top)
- Best king-size latex mattress: Nolah Natural
- Best king-size organic mattress: Avocado Eco Organic
- Best king-size mattress for athletic recovery: Molecule Hybrid
It’s good to be king.
If you’re planning to go big or go home with your new mattress, you’ll want to make sure you’ve snagged the very best.
We’ve rounded up some of the best king-size mattress options available across different price points and sleep needs. We also have some savvy shopping tips for you.
You’ll find a few different types of king-size mattresses on the market, including:
- Memory foam mattresses: This popular option is loved for its body-hugging ability. However, some people dislike the feeling of sinking into memory foam.
- Latex mattresses: While similar to memory foam mattresses, latex mattresses are known for improved breathability and bounce-back factor. They can also be more durable and cooler than regular memory foam. Latex, of course, is not the pick for people with a latex allergy.
- Innerspring mattresses: These are more traditional mattresses that use a steel coil support system. They’re long lasting and affordable, but they usually only have one thin layer of padding.
- Hybrid mattresses: These offer the best of both worlds: a coil spring base topped with layers of latex or foam. This blend gives comfort, durability, and support. Plus, hybrid mattresses work well for many sleeping styles.
There are also several sizes of king-size mattresses:
- regular king (typically 76 inches wide by 80 inches long)
- California king (typically 72 inches wide by 84 inches long, which is great for sleepers over 6 feet tall)
- split king (each side is adjustable to raise and lower)
- Alaskan king (typically the largest mattress available, at approximately 108 inches wide by 108 inches long)
Crowning the best kings took some legwork. Here’s how we did it:
- We reviewed company policies: Specifically, we dove into warranties, in-home trials, shipping, and return policies.
- We looked at company reputation and transparency: Each brand we feature has a positive reputation, transparent business practices, good customer reviews, and meets federal flammability requirements.
- We prioritized: We chose mattresses with good materials certifications and included brands that sell a range of king sizes.
Pricing guide
We based our pricing guide on standard king-size mattresses.
- $ = under $1,500
- $$ = $1,500–$2,500
- $$$ = over $2,500
Best king-size mattress for back pain
Saatva Solaire Adjustable Mattress
- Price: $$$
- Type: airbed
- Height: 13 inches
- Sizes: twin XL, full, queen, king, split king, California king, split California king
- Firmness: 50 options
- Shipping: free
- Trial length: 365-night trial
- Warranty: lifetime
This adjustable mattress is made of several layers of mixed materials (organic cotton, hypoallergenic latex, and gel-infused memory foam), topped off with an organic cotton pillow top that has a plush feel.
Using a remote, you can adjust the mattress to empty or fill its air chambers depending on your preferences. There are more than 50 firmness options, so you and your partner can choose your own firmness level for your side of the bed.
One temporary downside to this mattress is an off-gassing odor upon unboxing. This should only last a few hours, though.
What is off-gassing?
Off-gassing occurs when the chemicals used in manufacturing mattresses release once unboxed. The smell can be off-putting to some.
This mattress comes with a lifetime warranty and a 365-night trial.
Pros
- a good choice for sleepers with back pain, as it’s medium firm and adjustable
- a good choice for couples, as it’s adjustable on both sides and has over 50 firmness options
- a good choice for hot sleepers, as it has cooling and breathable material
- pressure-relieving comfort layers
- lifetime warranty
- 365-night trial
- free in-room delivery and setup and old mattress removal
Cons
- pricey
- possible off-gassing odor, though it’s temporary and common with many mattresses
- old mattress removal option excludes certain types of mattresses
Buy the Saatva Solaire Adjustable Mattress online.
Best king-size mattress for stomach sleepers
Helix Dawn
- Price: $$
- Type: hybrid
- Height: 12 inches
- Sizes: twin, twin XL, full, queen, king, California king
- Firmness: firm
- Shipping: free in the United States
- Trial length: 100-night sleep trial
- Warranty: 10 years
This firm option — good for both stomach and back sleepers — offers no sinkage and no give. It’s a hybrid mattress, so it has both foam comfort layers and steel coils. On the product page, the company says this model has up to 950 individually wrapped 8-inch steel coils.
It’s a good choice for breathability and edge support, which is an issue for other similar mattresses.
Most reviewers can’t agree on its firmness level (too firm! not firm enough!), though Helix ranks the mattress high on the firmness scale. Some reviewers complain that it gets too hot, even though Helix says it’s good for breathability.
This mattress is made in the United States and comes with a 100-night sleep trial and a 10-year warranty.
Pro
- firm enough for most stomach and back sleepers
- free shipping in the United States
- CertiPUR-US certified
- hypoallergenic cover
Con
- may be too firm for side sleepers
- some customers say the mattress traps heat
Best king-size memory foam mattress
Nectar Premier Memory Foam Mattress
- Price: $$
- Type: memory foam
- Height: 13 inches
- Sizes: twin, twin XL, full, queen, king, California king, split king
- Firmness: medium firm
- Shipping: free
- Trial length: 365-night trial
- Warranty: “forever” warranty (limited but covers your ownership)
Plush but supportive, this memory foam mattress by Nectar is made for front, back, or side sleepers.
As explained on the product page, this pick lands at a 6.5 on a 1 to 10 firmness scale, with 1 being a feather pillow and 10 a cement floor. The idea behind this number is to satisfy all sleepers by achieving a “just right” point between soft and firm.
Google reviewers can’t seem to agree if it’s “just right” with firmness or not, but the mattress has a rating of 4.3 out of 5 stars at the time of publication.
This mattress has five performance layers, including a 3-inch contouring and comforting gel memory foam. This is made from phase change material, which the company says is to provide a cool sleep.
The brand’s “forever” warranty sounds great at first glance, but there is some fine print to consider. This warranty covers you as the original owner of the mattress, but it doesn’t transfer to other owners.
It covers things like deterioration that causes the mattress to have a noticeable indentation of more than 1.5 inches (as long as it’s not due to sagging from improper use or a poor bed base).
The warranty won’t cover things like comfort preferences, accidents, changes due to environmental factors, increase in softness, or if the cover has been removed. It’s important to note that removing the cover completely voids the warranty.
Pros
- suitable for all sleeping styles
- 365-night home trial
- free shipping and returns
- CertiPUR-US certified
Cons
- users report a temporary off-gassing odor
- warranty is limited and somewhat strict
- after unboxing, this mattress needs 4 to 6 hours before using
Buy The Nectar Premier Memory Foam Mattress online.
Best luxury king-size mattress
Tempur-Pedic TEMPUR-Cloud
- Price: $$$
- Type: foam
- Height: 10 inches
- Sizes: twin, twin long, full, queen, king, California king, split king
- Firmness: medium
- Shipping: free
- Trial length: 90-night trial
- Warranty: 10 years (limited)
This king mattress boasts a moisture-wicking cover and is medium in feel. Tempur-Pedic made the mattress with the same memory foam originally developed by NASA for use during shuttle launches.
This mattress is also available in a hybrid model, which has spring coils for better support along the edges, bounce, and easier movement.
Reviewers rave about their experience with this mattress, though a few say the mattress is too stiff. It’s also worth pointing out that even though this is the lowest-priced Tempur-Pedic model, it’s at the top of our pricing guide.
This mattress comes with a 90-night trial and a 10-year warranty.
Pros
- free shipping
- 90-night trial
- 10-year limited warranty
- comes with a sturdy, reusable canvas bag
Cons
- pricey
- no setup or mattress removal service
- not compatible with box springs or floor use
Buy Tempur-Pedic TEMPUR-Cloud online.
Best king-size mattress for side sleepers
Tuft & Needle Original Mattress
- Price: $
- Type: foam
- Height: 9.5 inches
- Sizes: twin, twin XL, full, queen, king, California king
- Firmness: firm
- Shipping: free
- Trial length: 100-night trial
- Warranty: 10-year limited warranty
This simple mattress features just two open-cell foam layers, which is great for all sleeping styles. Tuft & Needle says this mattress offers substantial support, comfort, and pressure relief.
Reviewers say the mattress is quite firm, which is a good fit for those with back pain. The cover is plush and breathable, a nice touch.
While many reviewers are pleased with this original pick, some complain about eventual “squishy” sides and a lack of longevity.
If you want a softer option from Tuft & Needle, The Mint is 11.5 inches tall (2 inches higher than the original) and a little softer. It’s more expensive, but the brand says it offers more edge support and pressure relief for side sleepers. Plus, with 30 percent more graphite and upgraded ceramic gel material, The Mint offers a cooler sleep.
This mattress comes with a 100-night trial, a 10-year limited warranty, and free returns.
Pros
- reviewers say the mattress is quite firm
- designed for all sleeping styles
- pressure relief
- 100-night trial
- 10-year limited warranty
- free returns
Cons
- not as cooling as The Mint, the upgraded version
- edges may become squished over time
Buy the Tuft & Needle Original Mattress online.
Best king-size mattress for back sleepers
Puffy Lux Hybrid Mattress
- Price: $$
- Type: hybrid
- Height: 12 inches
- Sizes: twin, twin XL, full, queen, king, California king
- Firmness: medium plush
- Shipping: free
- Trial length: 101-night sleep trial
- Warranty: lifetime
This hybrid mattress offers strong support for all sleeping types, including side sleepers, thanks to its six-layer system. Puffy says their contouring foam and pocketed coils can help reduce strain from pressure points and won’t cause that “sinking in” feeling.
As a bonus, this mattress comes with a hypoallergenic, stain-resistant mattress cover.
It’s tough to find unsatisfied reviews, but a couple of reviewers say it’s just not cool enough for them or that it’s a bit too soft.
This mattress is made in the United States and comes with a 101-night sleep trial and a lifetime warranty.
Pros
- suitable for all sleeping types
- works with any bed frame
- lifetime warranty
Cons
- may be too soft for some sleepers
- some may not like the sinking feeling of memory foam
Buy the Puffy Lux Mattress online.
Best king-size mattress for people with more weight
WinkBed Plus
- Price: $$
- Type: hybrid
- Height: 14.5 inches
- Sizes: twin, twin XL, full, queen, king, California king
- Firmness: medium firm
- Shipping: free
- Trial length: 120-night trial
- Warranty: lifetime
This hybrid king mattress is specifically made for people over 250 pounds. It combines pocketed coil components and gel foam to help give sleepers pressure relief and exceptional support.
There are other firmness levels to choose from, but this Plus model is designed for sleepers with more weight, offering back support and edge support.
The top comfort layer is a soft material mixed with a plant-based fabric called Tencel, which provides a cooling effect.
Some reviewers say it’s too firm for their comfort level.
This mattress is made in the United States and comes with a 120-night trial and a lifetime guarantee.
Pros
- good back and edge support
- free shipping and returns
Cons
- may feel too firm for some sleepers
- may not be a good fit for sleepers under 250 pounds or couples who differ in weight
Best king-size hybrid mattress
Dreamfoam by Brooklyn Bedding Arctic Dreams Cooling Gel Mattress
- Price: $
- Type: hybrid
- Height: 10.25 inches
- Sizes: twin, twin XL, full, full XL, queen, short queen, king, California king, split king, RV bunk, RV king
- Firmness: medium
- Shipping: free
- Trial length: 120-night trial
- Warranty: 10-year warranty
This hybrid mattress has four layers, combining hypoallergenic foams with individually encased coils.
Its soft quilted top provides a plush feel and resists body impressions in the bed. Finally, the mattress offers a cooling effect, thanks to a cooling panel.
Most reviewers are pleased with its quality, especially at its price point. But others point out that over time, the edges tend to sag.
This mattress is made in the United States and comes with a 120-night trial.
Pros
- budget-friendly
- hypoallergenic foam
- CertiPUR-US certified foam
- cooling panel
- 120-night trial
- free shipping and returns
Cons
- edges may sag over time
Buy the Dreamfoam by Brooklyn Bedding Arctic Dreams Cooling Gel Mattress online.
Best firm king-size mattress
Plank by Brooklyn Bedding
- Price: $$
- Type: foam
- Height: 13.25 inches
- Sizes: twin, twin XL, full, queen, short queen, king, California king, split California king, short king, Olympic queen, RV king
- Firmness: firm, ultra firm
- Shipping: free
- Trial length: 120-night trial
- Warranty: 10-year warranty
This mattress is firm, flat, and flippable. The flat sleeping surface promotes a neutral spine position, which is good for your back and overall posture.
If you’re interested in a cooling effect, an optional cooling panel can be added for an additional charge.
This mattress gives fair warning of its tough-to-top firmness level, which leaves firm-loving reviewers happy. But it has others saying it’s just too firm.
This mattress is made in the United States and offers a 120-night trial and 10-year warranty.
Pros
- good option for those who prefer the firmest mattress
- flippable
- 120-night trial
- 10-year warranty
Cons
- optional cooling panel costs extra
- may be too firm for some sleepers
Buy the Plank by Brooklyn Bedding online.
Best king-size pillow top mattress
Avocado Green Mattress (with added pillow top)
- Price: $$$
- Type: hybrid
- Height: 11 or 13 inches
- Sizes: twin, twin XL, full, queen, king, California king
- Firmness: medium firm, gentle firm
- Shipping: free
- Trial length: 1-year trial
- Warranty: 25 years
This hybrid mattress by Avocado features up to 1,414 pocketed support coils along with Global Organic Latex Standard (GOLS) organic certified latex, Global Organic Textile Standard (GOTS) organic certified wool, and GOTS organic certified cotton.
You can select the pillow top option on Avocado Green’s website by clicking “add pillow top.” This will get you a permanently attached pillow top that adds 2 inches, making the mattress 13 inches high. This organic latex pillow top provides added pressure relief and has a luxury feel. It does come at an additional cost, though.
People under 150 pounds may find the pillow top the most useful. Without the pillow top, the mattress has an extra-firm feel. The pillow top offers more softness.
Most reviews for this pick are positive, but some say that even with the pillow top, it’s too firm for their preference.
This mattress comes with a 1-year trial, free carbon-negative shipping, and a 25-year warranty.
Pros
- best for side sleepers and combination sleepers
- free shipping and returns
- 25-year warranty
- 1-year trial
Cons
- pricey
- pillow top costs extra
Buy the Avocado Green Mattress (with added pillow top) online.
Best king-size latex mattress
Nolah Natural
- Price: $$
- Type: latex hybrid
- Height: 11 inches
- Sizes: twin, twin XL, full, queen, king, California king, split king
- Firmness: medium
- Shipping: free
- Trial length: 120 nights
- Warranty: lifetime
The Nolah Natural is a hybrid mattress made with breathable Talalay latex, an eco-friendly and naturally hypoallergenic material. According to Nolah, it’s also 33% more pressure relieving than synthetic or Dunlop latex.
Latex has a responsive, contouring feel with full body support, and it’s a great alternative to memory foam. In this mattress, hole-punctured latex is combined with a durable coil system and GOTS-certified organic cotton and wool for a mattress that’s temperature regulating and supportive.
Reviewers rave about the cool, comfortable feel and the eco-friendly factor.
Nolah offers a 120-night trial, a limited lifetime warranty, and free shipping.
Pros
- eco-friendly materials
- 120-night trial
- limited lifetime warranty
- free shipping
- hypoallergenic, so it’s a good choice for people with allergies or asthma
Cons
- latex makes it a heavy mattress
Best king-size organic mattress
Avocado Eco Organic
- Price: $$
- Type: hybrid
- Height: 10 inches
- Sizes: twin, twin XL, full, queen, king, California king
- Firmness: medium
- Shipping:free
- Trial length: 100 nights
- Warranty: 10 years
Avocado made our list again with its Eco Organic mattress. According to the company, it’s the most affordable certified organic mattress made in America. That’s because Avocado makes its own innersprings from recycled steel and uses latex and wool from its own farms in India and Guatemala.
From top to bottom, this mattress is designed to be eco-friendly, but it doesn’t sacrifice comfort or support in the process either. It has a universally comfortable medium firmness to suit a wide range of sleepers, and the latex and wool help hot sleepers stay comfortable.
Reviewers are generally thrilled with the mattress, but some found it too firm for their liking.
Avocado offers a 100-night trial and a 10-year warranty, plus free shipping and returns.
Pros
- made with certified organic materials
- good price point
- 100-night trial
- 10-year warranty
- free shipping and returns
Cons
- some reviewers found it too firm
Buy the Avocado Eco Organic mattress online.
Best king-size mattress for athletic recovery
Molecule Hybrid
- Price: $$
- Type: hybrid
- Height: 13 inches
- Sizes: twin, twin XL, full, queen, king, California king
- Firmness: medium
- Shipping: free
- Trial length: 365 nights
- Warranty: lifetime
The Molecule Hybrid mattress is a foam and coil hybrid design that’s made for cool, restorative sleep. According to the company, its trademarked memory foams offer five times the airflow of traditional memory foam to better manage heat.
Layers of foam are supported by an adaptive coil system to relieve pressure and keep you comfortably aligned in any position.
This mattress is a newer offering, so there are only 50 reviews. Still, customers are overwhelmingly pleased with the Molecule Hybrid, describing it as well worth the money.
Molecule offers a generous 365-night trial and a limited lifetime warranty, along with free shipping and returns.
Pros
- cooler than traditional memory foam mattresses
- 365-night trial
- lifetime warranty
Cons
- some reviewers found it too soft
Here’s a quick chart to help you compare your king-size options.
| Price | Mattress type | Height | Length of trial | Warranty | Who it’s best for | |
|---|---|---|---|---|---|---|
| Saatva Solaire Adjustable Mattress | $$$ | airbed | 13 inches | 365 nights | lifetime | sleepers with back pain or anyone who wants an adjustable mattress |
| Helix Dawn | $$ | hybrid | 12 inches | 100 nights | 10 years | stomach and side sleepers |
| Nectar Premier Memory Foam | $$ | memory foam | 13 inches | 365 nights | lifetime (with exceptions) | stomach, back, and side sleepers |
| Tempur-Pedic TEMPUR-Cloud | $$$ | foam | 10 inches | 90 nights | 10 years | sleepers who like the body-hugging feel of memory foam |
| Tuft & Needle Original | $ | foam | 9.5 inches | 100 nights | 10 years | side sleepers and those who like a firmer mattress |
| Puffy Lux Hybrid | $$ | hybrid | 12 inches | 101 nights | lifetime | side sleepers and anyone who needs advanced pressure relief |
| The WinkBed Plus | $$ | hybrid | 14.5 inches | 120 nights | lifetime | sleepers with more weight |
| Dreamfoam by Brooklyn Bedding Arctic Dreams Cooling Gel Mattress | $ | hybrid | 10.25 inches | 120 nights | 10 years | budget shoppers |
| Plank by Brooklyn Bedding | $$ | foam | 13.25 inches | 120 nights | 10 years | sleepers who prefer a very firm mattress |
| Avocado Green Mattress (with added pillow top) | $$$ | hybrid | 11 or 13 inches | 365 nights | 25 years | side and combination sleepers or those who want an organic mattress |
| Nolah Natural | $$ | latex hybrid | 11 inches | 120 nights | lifetime | side and back sleepers or people with allergies or asthma |
| Avocado Eco Organic | $$ | hybrid | 10 inches | 100 nights | 10 years | back and stomach sleepers or those who want an organic mattress |
| Molecule Hybrid | $$ | hybrid | 13 inches | 365 nights | lifetime | side and back sleepers or hot sleepers |
There are plenty of sleepers best suited to a king-size mattress:
- tall people or people with more weight who want comfortable weight distribution and space to sprawl out
- restless sleepers who need more room for tossing and turning
- sleepers who want extra space for children or furry friends
- sleeping partners who want a little more room, less motion transfer, or space for activities
Pros
- Roomy: King-size mattresses provide plenty of space for partners to get comfy, roll over, and stretch out — not to mention, extra space for kiddos and pets to join.
- Comfier for sleepers with more weight: These mattresses are usually supportive, long, and wide, accommodating people of all body types and sizes.
- Options: You can find memory foam, latex, innerspring, and hybrid king-size mattresses. There are also extended king sizes available, including California king, split king, and Alaskan king.
Cons
- Higher price point: King-size mattresses, bedding, and other accessories are often pricier than the more common queen-size mattresses.
- Takes up more space: King-size mattresses take up more space in the bedroom. A larger mattress may also take more effort to move.
- May feel too big for some sleepers: Petite sleepers may feel like the bed has more space than needed.
When shopping for a king-size mattress, do your research and consider your needs, lifestyle, and sleeping style (side, back, stomach, etc.). Many mattresses will say what sleeping position they’re intended for, but in general, opt for something firmer if you’re a back or stomach sleeper, and something softer if you’re a side sleeper.
Take a look at the mattress’s materials, too. You may want to consider those that have certifications like GOTS or GOLS. Think about whether you find foam comfy or if you prefer the extra support of springs, too.
If you can, test out mattresses in person. A test drive is often the fastest way to know if a mattress is right for you. However, if you can’t try a mattress out ahead of time, buy from a company that offers an in-home trial period and a good return policy. Also, take a look at the warranty to see what’s covered.
Is a king-size mattress the biggest mattress?
Nope. There’s a range of king-size mattresses available beyond just a standard king. Alaskan king is usually the largest king-size mattress available, measuring approximately 108 inches wide by 108 inches long.
What’s the difference between a king-size mattress and a California king?
A standard king-size mattress is usually 76 inches wide by 80 inches long, while a California king is typically 72 inches wide by 84 inches long. Thanks to its extra length, a California king tends to be the best choice for sleepers over 6 feet tall.
What’s a split king mattress?
Think of this bed as two twin XL mattresses pushed together. This type of king-size mattress is usually designed to work with an adjustable base and to cater to each sleeper’s needs. One sleeper can sit up, while the other rests in a horizontal position.
These mattresses are good for reducing motion transfer, as each sleeper has their own mattress. This means, you likely won’t be able to feel your partner moving around. The downside is that these mattresses tend to cost more and require specific sheets.
How can you choose which king-size mattress to buy?
First, consider who the mattress is accommodating. A tall sleeper? A sleeper with more weight? Multiple sleepers, including children and pets? Then, consider how much space you have. Can you reasonably move the mattress through the halls and doorways to get to your bed frame?
Once you know the answers to these questions, check out the range of king-size mattresses available to find the best dimensions for you and your space.
There are many king-size mattress options, sizes, and price ranges available.
These 13 options checked our boxes for reputation and quality but be sure to do your research before committing to a brand. Try to test the mattress out in person if possible or buy from a company that offers an in-home trial.
Breanna Mona is a writer based in Cleveland, Ohio. She holds a master’s degree in media and journalism and writes about health, lifestyle, and entertainment.
