Whether they’re paired with adjustable bases or placed directly on top of a bed frame, split king mattresses have many perks. If you’re in the market for one of these versatile beds, you’ve come to the right place!
We’ve rounded up a list of the best split king mattresses so that you can find the perfect one for your sleep needs. Keep reading to learn more about each bed’s firmness, feel, and construction.
Best Split King Mattresses: Our Top 8 Picks
The best split king mattresses are:
- Helix Midnight – Editor’s Pick
- Saatva Solaire – Best Split King Mattress for Couples
- WinkBed – Best Split King Mattress for Back Pain
- Nectar – Best Memory Foam Split King Mattress
- DreamCloud – Best Hybrid Split King Mattress
- Leesa – Best Split King Mattress for Side Sleepers
- Birch – Best Organic Split King Mattress
- Brooklyn Bedding Signature – Best Split King Mattress for Back Sleepers
How We Test Our Products
Using proprietary methodology and hands-on testing, we have reviewed hundreds of mattresses. In this roundup of the best split king mattresses, we focused on durability, pricing, cooling, motion transfer, and edge support.
Compare the Best Split King Mattresses
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| Helix Midnight Mattress | Saatva Solaire Mattress | WinkBed Mattress | Nectar Mattress | DreamCloud Original Mattress | Leesa Original Mattress | Birch Mattress | Brooklyn Bedding Signature Hybrid Mattress | |
| Rating | ||||||||
| Firmness | Medium-firm: 7/10 | Multiple firmness options | Multiple firmness options | Medium-firm: 6.5/10 | Firm: 7.5/10 | Medium-firm: 6.5/10 | Medium-firm: 7/10 | Multiple firmness options |
| Material | Hybrid | Other | Hybrid | Foam | Hybrid | Foam | Hybrid | Hybrid |
| Cooling | -- | ✓ | ✓ | -- | ✓ | -- | ✓ | -- |
| Sleep Position | Back & Side | Combination | Back & Stomach | Back & Side | Back | Combination | Back & Stomach | Back |
Helix Midnight Mattress
Material
Hybrid
Trial Period
100 nights
Shipping Method
Free shipping
Firmness
Medium-firm: 7/10
Warranty
10-year warranty
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Couples
This bed has great motion isolation so you will not feel your partner tossing and turning at night.
Back Sleeping
Ideal for lightweight and average weight back sleepers.
Side Sleeping
Ideal for lightweight and average weight side sleepers.Financing Options
Financing options are available for this mattress.
Helix Midnight Mattress
The Helix Midnight is the brand's most popular model. It has a balance of comfort and support and should be an excellent match for back sleepers.
Material
Hybrid
Warranty
10-year warranty
Firmness
Medium-firm: 7/10
Shipping Method
Free shipping
Trial Period
100 nights
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Couples
This bed has great motion isolation so you will not feel your partner tossing and turning at night.
Back Sleeping
Ideal for lightweight and average weight back sleepers.
Side Sleeping
Ideal for lightweight and average weight side sleepers.Financing Options
Financing options are available for this mattress.
Helix Midnight Mattress
The Helix Midnight is the brand's most popular model. It has a balance of comfort and support and should be an excellent match for back sleepers.
Material
Hybrid
Firmness
Medium-firm: 7/10
Trial Period
100 nights
Warranty
10-year warranty
Shipping Method
Free shipping
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Couples
This bed has great motion isolation so you will not feel your partner tossing and turning at night.
Back Sleeping
Ideal for lightweight and average weight back sleepers.
Side Sleeping
Ideal for lightweight and average weight side sleepers.Financing Options
Financing options are available for this mattress.
With over a dozen different mattress models, Helix Sleep is known for variety. They even created a mattress quiz that matches customers to their ideal bed based on their firmness preferences, sleeping position, and body type.
But if you’re looking for a classic medium-firm hybrid mattress, you can’t go wrong with the Helix Midnight. This mattress contains durable coils, plush memory foam, and a cooling cover. It works well for most back and side sleepers!
Though you won’t find a split king option on the Helix website, you can purchase two twin XL mattresses and receive the same thing. This makes it a particularly good option for couples with different preferences. That way, each person can rest on the mattress that works for them.
Helix Midnight Highlights
- It offers a great balance of comfort and support for back and side sleepers.
- It has a balanced hybrid feel.
- Thanks to its high-end materials, this mattress is very durable.
Keep In Mind
- You’ll need to purchase two twin XL mattresses in order to get a split king.
- If you’re a particularly hot sleeper, you may want to opt for the Helix Midnight Luxe, which contains more cooling features.
Read our Helix Midnight mattress review. Or for other options, check out our recommendations of the best mattresses for 2022.
Saatva Solaire Mattress
Material
Other
Trial Period
365 nights
Shipping Method
Free white glove delivery
Firmness
Multiple firmness options
Warranty
Lifetime warranty
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Hot Sleepers
If you often overheat while you sleep, this mattress should help you stay cool.
Couples
This bed has great motion isolation so you will not feel your partner tossing and turning at night.
Back Sleeping
Ideal for lightweight, average weight, and heavyweight back sleepers.
Side Sleeping
Ideal for lightweight, average weight, and heavyweight side sleepers.
Stomach Sleeping
Ideal for lightweight, average weight, and heavyweight stomach sleepers.Financing Options
Financing options are available for this mattress.
Saatva Solaire Mattress
The Saatva Solaire is a very comfortable mattress with adjustable firmness. It is a great fit for light- and medium-weight people of any sleeping position.
Material
Other
Warranty
Lifetime warranty
Firmness
Multiple firmness options
Shipping Method
Free white glove delivery
Trial Period
365 nights
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Hot Sleepers
If you often overheat while you sleep, this mattress should help you stay cool.
Couples
This bed has great motion isolation so you will not feel your partner tossing and turning at night.
Back Sleeping
Ideal for lightweight, average weight, and heavyweight back sleepers.
Side Sleeping
Ideal for lightweight, average weight, and heavyweight side sleepers.
Stomach Sleeping
Ideal for lightweight, average weight, and heavyweight stomach sleepers.Financing Options
Financing options are available for this mattress.
Saatva Solaire Mattress
The Saatva Solaire is a very comfortable mattress with adjustable firmness. It is a great fit for light- and medium-weight people of any sleeping position.
Material
Other
Firmness
Multiple firmness options
Trial Period
365 nights
Warranty
Lifetime warranty
Shipping Method
Free white glove delivery
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Hot Sleepers
If you often overheat while you sleep, this mattress should help you stay cool.
Couples
This bed has great motion isolation so you will not feel your partner tossing and turning at night.
Back Sleeping
Ideal for lightweight, average weight, and heavyweight back sleepers.
Side Sleeping
Ideal for lightweight, average weight, and heavyweight side sleepers.
Stomach Sleeping
Ideal for lightweight, average weight, and heavyweight stomach sleepers.Financing Options
Financing options are available for this mattress.
The Saatva Solaire is the ultimate customizable mattress. With the help of vulcanized air chambers, you can adjust the firmness to your liking.
The Saatva Solaire has fifty different firmness levels to choose from, and on our Mattress Clarity firmness scale, that ranges from as soft as a 5.5/10 to a 8/10. If you’re a side sleeper, you’ll likely prefer a softer setting. If you tend to rest on your back or stomach, you’ll get more support from a firmer setting.
The Saatva Solaire split king mattress works well for couples because it allows each person to customize the firmness of their side of the mattress. And when you pair it with a Saatva adjustable base, you can even raise and lower each side of the bed!
Saatva Solaire Highlights
- It features two vulcanized air chambers that allow sleepers to adjust the firmness level of their side of the bed.
- The mattress has fifty different firmness levels, ranging from exceptionally soft to firm.
- It pairs well with the Saatva Lineal Adjustable base.
Keep In Mind
- The Saatva Solaire is a luxurious mattress, so it has a higher price tag.
- The mattress doesn’t get firmer than 8/10 on our firmness scale, so it may not work well for folks like extremely firm beds.
Read our Saatva Solaire mattress review. Or for other options, check out the best mattresses for couples.
WinkBed Mattress
Material
Hybrid
Trial Period
120 nights
Shipping Method
Free shipping
Firmness
Multiple firmness options
Warranty
Lifetime warranty
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Hot Sleepers
If you often overheat while you sleep, this mattress should help you stay cool.
Back Pain
This bed is perfect for anyone suffering from back pain.
Back Sleeping
Ideal for lightweight and average weight back sleepers.
Stomach Sleeping
Ideal for average weight stomach sleepers.Financing Options
Financing options are available for this mattress.
WinkBed Mattress
Winkbeds has a mattress that is an excellent balance of comfort and support.
Material
Hybrid
Warranty
Lifetime warranty
Firmness
Multiple firmness options
Shipping Method
Free shipping
Trial Period
120 nights
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Hot Sleepers
If you often overheat while you sleep, this mattress should help you stay cool.
Back Pain
This bed is perfect for anyone suffering from back pain.
Back Sleeping
Ideal for lightweight and average weight back sleepers.
Stomach Sleeping
Ideal for average weight stomach sleepers.Financing Options
Financing options are available for this mattress.
WinkBed Mattress
Winkbeds has a mattress that is an excellent balance of comfort and support.
Material
Hybrid
Firmness
Multiple firmness options
Trial Period
120 nights
Warranty
Lifetime warranty
Shipping Method
Free shipping
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Hot Sleepers
If you often overheat while you sleep, this mattress should help you stay cool.
Back Pain
This bed is perfect for anyone suffering from back pain.
Back Sleeping
Ideal for lightweight and average weight back sleepers.
Stomach Sleeping
Ideal for average weight stomach sleepers.Financing Options
Financing options are available for this mattress.
The WinkBed mattress has a zoned support system, which means it feels firmer in the center and softer near the head and foot. This is great news for folks with back pain because it helps keep the spine aligned throughout the night.
Plus, the WinkBed mattress is available in four firmness levels: Softer, Luxury Firm, Firmer, and Plus (which is designed for heavy people). No matter your sleeping position or body type, you should find a firmness level that works for you.
The WinkBed mattress also has a tufted pillow top made out of Tencel fabric, which helps it stay cool at night. And thanks to its durable coil system and plush comfort layers, this mattress has a balanced hybrid feel.
WinkBed Highlights
- This mattress has a zoned support system, making it one of the best mattresses for people with back pain.
- It has a cover made out of Tencel fabric, which helps keep the mattress cool.
- It’s a durable mattress with a strong and bouncy coil system.
Keep In Mind
- This mattress isn’t a great choice for folks who want a slow-moving memory foam mattress.
- Make sure to consider your body type and sleeping position when choosing your firmness level. In general, the Softer model works best for side sleepers, and the Luxury Firm model is ideal for back sleepers. Stomach sleepers will want the Firmer model, and heavier folks should opt for the WinkBed Plus.
- For a split king, order two twin XL mattresses.
Read our WinkBed mattress review. Or for other options, check out the best mattresses for back pain.
Nectar Mattress
Material
Foam
Trial Period
365 nights
Shipping Method
Free shipping
Firmness
Medium-firm: 6.5/10
Warranty
Lifetime warranty
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Joint Pain
This bed is perfect for anyone suffering from joint pain.
Hip Pain
This bed is perfect for anyone suffering from hip pain.
Back Sleeping
Ideal for lightweight and average weight back sleepers.
Side Sleeping
Ideal for lightweight and average weight side sleepers.Financing Options
Financing options are available for this mattress.
Nectar Mattress
Nectar is a very comfortable memory foam mattress that happens to also be an amazing value.
Material
Foam
Warranty
Lifetime warranty
Firmness
Medium-firm: 6.5/10
Shipping Method
Free shipping
Trial Period
365 nights
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Joint Pain
This bed is perfect for anyone suffering from joint pain.
Hip Pain
This bed is perfect for anyone suffering from hip pain.
Back Sleeping
Ideal for lightweight and average weight back sleepers.
Side Sleeping
Ideal for lightweight and average weight side sleepers.Financing Options
Financing options are available for this mattress.
Nectar Mattress
Nectar is a very comfortable memory foam mattress that happens to also be an amazing value.
Material
Foam
Firmness
Medium-firm: 6.5/10
Trial Period
365 nights
Warranty
Lifetime warranty
Shipping Method
Free shipping
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Joint Pain
This bed is perfect for anyone suffering from joint pain.
Hip Pain
This bed is perfect for anyone suffering from hip pain.
Back Sleeping
Ideal for lightweight and average weight back sleepers.
Side Sleeping
Ideal for lightweight and average weight side sleepers.Financing Options
Financing options are available for this mattress.
If you want to gently sink into memory foam comfort, check out the Nectar mattress. This mattress has a classic medium-firm feel, making it great for most back and side sleepers.
Even though it’s made entirely out of foam, this mattress shouldn’t overheat at night. It has a layer of gel-infused memory foam on top, which helps dissipate body heat. Plus, it has a cooling quilted cover and breathable transition layer.
Nectar mattresses are sold at value prices, and they should last at least seven years.
Nectar Highlights
- It offers lots of pressure relief and body contouring.
- The Nectar mattress has a classic medium-firm feel.
- The gel-infused memory foam helps dissipate body heat.
Keep In Mind
- Because of its slow-moving feel, some folks may have difficulty moving around on this mattress.
- Even though it contains many cooling features, it may not be a great choice for folks who sleep particularly hot at night.
Read our Nectar mattress review. Or for other options, check out the best memory foam mattresses.
DreamCloud Original Mattress
Material
Hybrid
Trial Period
365 nights
Shipping Method
Free shipping
Firmness
Firm: 7.5/10
Warranty
Lifetime warranty
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Hot Sleepers
If you often overheat while you sleep, this mattress should help you stay cool.
Seniors
This bed is perfect for senior sleepers.
Back Sleeping
Ideal for average weight back sleepers.Financing Options
Financing options are available for this mattress.
DreamCloud Original Mattress
The DreamCloud is a high-quality hybrid mattress that is sold for a value price.
Material
Hybrid
Warranty
Lifetime warranty
Firmness
Firm: 7.5/10
Shipping Method
Free shipping
Trial Period
365 nights
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Hot Sleepers
If you often overheat while you sleep, this mattress should help you stay cool.
Seniors
This bed is perfect for senior sleepers.
Back Sleeping
Ideal for average weight back sleepers.Financing Options
Financing options are available for this mattress.
DreamCloud Original Mattress
The DreamCloud is a high-quality hybrid mattress that is sold for a value price.
Material
Hybrid
Firmness
Firm: 7.5/10
Trial Period
365 nights
Warranty
Lifetime warranty
Shipping Method
Free shipping
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Hot Sleepers
If you often overheat while you sleep, this mattress should help you stay cool.
Seniors
This bed is perfect for senior sleepers.
Back Sleeping
Ideal for average weight back sleepers.Financing Options
Financing options are available for this mattress.
Hybrid mattresses tend to have long lifespans, and they offer sleepers comfort and support. If this is what you’re looking for, DreamCloud is a great option.
The DreamCloud mattress offers more support than traditional beds, coming in at 7.5/10 on our firmness scale. This makes it a great choice for back sleepers and average weight stomach sleepers.
Here at Mattress Clarity, we particularly love the DreamCloud’s tufted pillow top and cashmere-blend cover. The soft memory foam layers offer ample pressure relief, while the sturdy coils support the spine and help keep it in the proper alignment.
DreamCloud Highlights
- It has a tufted pillow top and a cover made out of a cashmere-blend material.
- It’s a durable mattress that should last at least a decade.
- It feels more supportive than most mattresses, making it a good choice for back sleepers and some stomach sleepers.
Keep In Mind
- You’ll need to purchase two twin XL mattresses in order to get a split king.
- This mattress may not work well for many side sleepers.
Read our DreamCloud mattress review. For more options, check out our recommendations for the best hybrid mattresses.
Leesa Original Mattress
Material
Foam
Trial Period
100 nights
Shipping Method
Free shipping
Firmness
Medium-firm: 6.5/10
Warranty
10-year warranty
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Back Sleeping
Ideal for lightweight, average weight, and heavyweight back sleepers.
Side Sleeping
Ideal for average weight side sleepers.
Stomach Sleeping
Ideal for lightweight stomach sleepers.Financing Options
Financing options are available for this mattress.
Leesa Original Mattress
Made with responsive foam, the Leesa Original mattress works well for side sleepers and hot sleepers.
Material
Foam
Warranty
10-year warranty
Firmness
Medium-firm: 6.5/10
Shipping Method
Free shipping
Trial Period
100 nights
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Back Sleeping
Ideal for lightweight, average weight, and heavyweight back sleepers.
Side Sleeping
Ideal for average weight side sleepers.
Stomach Sleeping
Ideal for lightweight stomach sleepers.Financing Options
Financing options are available for this mattress.
Leesa Original Mattress
Made with responsive foam, the Leesa Original mattress works well for side sleepers and hot sleepers.
Material
Foam
Firmness
Medium-firm: 6.5/10
Trial Period
100 nights
Warranty
10-year warranty
Shipping Method
Free shipping
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Back Sleeping
Ideal for lightweight, average weight, and heavyweight back sleepers.
Side Sleeping
Ideal for average weight side sleepers.
Stomach Sleeping
Ideal for lightweight stomach sleepers.Financing Options
Financing options are available for this mattress.
Side sleepers typically need mattresses that will cushion their shoulders and hips, and Leesa definitely delivers. This bed has a plush comfort layer and supportive base layer, which helps keep the spine aligned and joints relaxed.
The Leesa mattress contains a breathable foam comfort layer, which helps promote airflow. Beneath that sits a layer of memory foam, which offers body contouring and pressure relief.
Plus, with our Mattress Clarity discounts, the Leesa mattress is sold at a value price!
Leesa Highlights
- It has a balanced foam feel that offers plenty of cushioning for pressure points.
- It has a medium-firm feel, making it great for both side and back sleepers.
- It’s sold at a budget-friendly price.
Keep In Mind
- Leesa doesn’t specifically sell split kings, so you’ll need to order two twin XL mattresses.
- It’s not a great choice for folks who prefer bouncy and responsive mattresses.
Read our Leesa mattress review. For more options, check out our best mattress for side sleepers.
Birch Mattress
Material
Hybrid
Trial Period
100 nights
Shipping Method
Free shipping
Firmness
Medium-firm: 7/10
Warranty
25-year warranty
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Hot Sleepers
If you often overheat while you sleep, this mattress should help you stay cool.
Back Sleeping
Ideal for average weight back sleepers.
Stomach Sleeping
Ideal for average weight stomach sleepers.Financing Options
Financing options are available for this mattress.
Birch Mattress
Birch is an eco-friendly mattress-in-a-box that’s made with natural latex and organic cotton and wool. It has a base layer of individually wrapped coils and comfort layers made with chemical-free latex foam.
Material
Hybrid
Warranty
25-year warranty
Firmness
Medium-firm: 7/10
Shipping Method
Free shipping
Trial Period
100 nights
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Hot Sleepers
If you often overheat while you sleep, this mattress should help you stay cool.
Back Sleeping
Ideal for average weight back sleepers.
Stomach Sleeping
Ideal for average weight stomach sleepers.Financing Options
Financing options are available for this mattress.
Birch Mattress
Birch is an eco-friendly mattress-in-a-box that’s made with natural latex and organic cotton and wool. It has a base layer of individually wrapped coils and comfort layers made with chemical-free latex foam.
Material
Hybrid
Firmness
Medium-firm: 7/10
Trial Period
100 nights
Warranty
25-year warranty
Shipping Method
Free shipping
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Hot Sleepers
If you often overheat while you sleep, this mattress should help you stay cool.
Back Sleeping
Ideal for average weight back sleepers.
Stomach Sleeping
Ideal for average weight stomach sleepers.Financing Options
Financing options are available for this mattress.
Birch, also created by Helix Sleep, is one of the best eco-friendly mattresses on the market. Made with durable Talalay latex, organic cotton, and strong innersprings, this bed is both cooling and luxurious.
Another perk: Talalay latex is naturally breathable, so it won’t trap heat like memory foam often does. This material also feels responsive, making it easy for folks to move around on top of the mattress.
The Birch mattress feels slightly firmer than the industry standard, coming in at 7/10 on our firmness scale. We recommend this mattress for back sleepers and lightweight stomach sleepers.
Birch Highlights
- This mattress contains luxurious, eco-friendly materials.
- The Talalay latex comfort layer is durable, responsive, and cooling.
- Because of its high-quality constriction, this mattress should last at least a decade.
Keep In Mind
- Birch doesn’t specifically sell split kings, but you can purchase two twin XL mattresses.
- The Birch isn’t a great choice for people who prefer slow-moving memory foam mattresses
Read our Birch mattress review. For more recommendations, check out our best organic mattresses.
Brooklyn Bedding Signature Hybrid Mattress
Material
Hybrid
Trial Period
120 nights
Shipping Method
Free shipping
Firmness
Multiple firmness options
Warranty
10-year warranty
Price Range
$$$$$
Brooklyn Bedding Signature Hybrid Mattress
Brooklyn Bedding has amazing products that are sold at very affordable prices. This mattress is extremely high-quality and a great option for combination sleepers.
Material
Hybrid
Warranty
10-year warranty
Firmness
Multiple firmness options
Shipping Method
Free shipping
Trial Period
120 nights
Price Range
$$$$$
Brooklyn Bedding Signature Hybrid Mattress
Brooklyn Bedding has amazing products that are sold at very affordable prices. This mattress is extremely high-quality and a great option for combination sleepers.
Material
Hybrid
Firmness
Multiple firmness options
Trial Period
120 nights
Warranty
10-year warranty
Shipping Method
Free shipping
Price Range
$$$$$
The Brooklyn Bedding Signature mattress is available in three firmness levels: soft, medium, and firm. Average weight back sleepers, however, will feel the most comfort and support on the medium model.
This mattress features premium memory foam, high-quality transition foam, and 8” of individually-encased coils. All together, these materials give the mattress a long lifespan of 7-10 years – but that doesn’t mean it’ll cost an arm and a leg! Brooklyn Bedding owns their own factory, so they can cut costs and pass the savings on to customers.
Brooklyn Bedding Signature Highlights
- It’s available in three firmness levels, so it works for a variety of people.
- It’s a durable mattress with a responsive feel.
- The Brooklyn Bedding Signature mattress is sold at a value price.
Keep In Mind
- Brooklyn Bedding doesn’t sell split kings, but you can buy two twin XL mattresses.
- This isn’t a great choice for folks looking for a mattress with a slow-moving feel.
Read our Brooklyn Bedding Signature mattress review. For more recommendations, check out our best mattresses for back sleepers.
What Is A Split King Mattress?
When you place two 38” x 80” mattresses (also known as twin XLs) together, you’ll get a split king. Sometimes, mattress companies specifically sell split kings, but most of the time, customers will need to purchase two twin XL mattresses and put them side-by-side.
Benefits of a Split King Mattress
Split king mattresses are great options for partners who have different sleeping preferences, because they allow each person to choose the bed that suits their needs.
When paired with adjustable bed frames, split kings allow each person to customize the height of their mattress. Folks who snore, for example, can benefit from elevating their head at night. This not only opens airways and alleviates symptoms – it also helps the sleeping partner get some space from the annoying sound.
How To Choose A Split King Mattress
When shopping for a split king mattress, there are several factors to consider.
Firmness
First and foremost, you’ll want to think about your desired firmness level. Mattress Clarity’s firmness scale ranges from 1-10, with 6.5/10 representing medium-firm. Average weight back and side sleepers typically need medium-firm beds, while stomach sleepers benefit from firmer mattresses. Ultimately, it all boils down to personal preference. Split kings are great ways to ensure couples rest on their ideal bed.
Feel
If you love sinking into a slow-moving memory foam mattress, but your partner wants a bouncy innerspring bed – order a twin XL of each one! With split king mattresses, nobody has to compromise.
Durability
Mattresses are huge investments, so you will want to make sure your purchase has a long lifespan. Most all-foam mattresses last about seven years, and hybrid models can last as long as a decade.
When you’re shopping for your new bed, make sure to look at its construction. Latex, high-density foam, and strong coils tend to last longer than other materials.
Price
Mattress prices run the gamut, but generally, you can expect to pay between $1,200 and $3,000 for a split king mattress. Don’t forget – you can save some significant dough by using our Mattress Clarity coupons!
Split King Bed Frames
You don’t have to purchase a specific bed frame for your split king mattress. As long as the base fits a standard king mattress, you can easily fit both sections on top of it.
Here at Mattress Clarity, we particularly love platform bases because they don’t require box springs for support. Adjustable bases, such as the Saatva and Tuft & Needle, are also great options if couples want to adjust the height of their side of the bed.
RELATED: Best adjustable bases and bed frames
How to Keep Split King Mattresses Together
While split king mattresses have many benefits, there is one drawback that frequently annoys customers: Sometimes, the mattresses slide apart!
Fortunately, there are several easy ways to keep split king mattresses together. Oftentimes, manufacturers include iron plate connectors to the outside edge of each twin XL mattress, which allows customers to easily attach them.
Non-slip mattress pads can also help solve this problem. Simply place the thin grippy pad on the top of the bed frame and put the split king on top of it!
If all else fails, you can purchase a fitted bed frame that has a headboard, footboard, and side rails. This will help prevent your mattresses from sliding around and can create a stable sleeping environment.
Split King vs King
Though they have the same dimensions, split kings and king size mattresses aren’t the same. Split kings contain two mattresses that each measure 38” x 80.” King size beds contain one solid mattress that measures 76” x 80.”
Split king mattresses are ideal for partners who have different mattress preferences or who want to raise and lower their side of the bed with an adjustable base.
That said, split king mattresses may not work well for couples who want to rest closer to the center of the bed. Because split kings contain two mattresses, sleepers often feel a firmer ridge toward the center of the bed frame, which can be uncomfortable.
King mattresses are great for couples who have similar mattress preferences and don’t want to raise or lower each side of the bed with a split king adjustable base. It’s also easier to make the bed when you have a traditional king mattress because there’s only one fitted sheet.
Split King vs Split California King Mattress
Though rare, you can occasionally find split California king mattresses online. This type of bed consists of two mattresses that measure 36” x 42.” When placed together, they create a traditional California king bed measuring 72” x 84.”
Kings and California kings have the same surface area, but California kings are better suited for taller folks because they are four inches longer and two inches narrower than kings.
Why Should You Trust Our Reviews?
Mattress Clarity reviewers have tested hundreds of different mattresses, and using proprietary methodology, have rounded up the eight best split king mattresses. For this review, the Mattress Clarity staff focused specifically on firmness, feel, pricing, and durability.
Summary
Once again, here are our top eight picks for the best split king mattresses.
| Mattress | Best For: |
| Helix Midnight | Editor’s Pick |
| Saatva Solaire | Best Split King Mattress for Couples |
| WinkBed | Best Split King Mattress for Back Pain |
| Nectar | Best Memory Foam Split King Mattress |
| DreamCloud | Best Hybrid Split King Mattress |
| Leesa | Best Split King Mattress for Side Sleepers |
| Birch | Best Organic Split King Mattress |
| Brooklyn Bedding Signature | Best Split King Mattress for Back Sleepers |
FAQs
Still have questions? We’ve got answers! Check out our FAQ section below for more clarity.
Are split king mattresses comfortable?
Yes! Split king mattresses are just as comfortable as any other mattress, and as long as you find the right firmness level and feel for your sleep needs, you should get the optimal amount of comfort and support. Split kings may not work well for couples who tend to rest closer to the center of the mattress, however. Because split kings contain two twin XL mattresses put together, the center section often feels a bit firmer than the rest of the bed.
How big is a split king mattress?
Split king mattresses are the same dimensions as king size beds, 76” x 80.” The only difference is that they are split evenly in two!
Is a split king two twin mattresses?
Not quite! Split kings contain two Twin XL mattresses that each measure 38” x 80.”
