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- Best overall split king mattress: Saatva Solaire Mattress
- Best budget split king mattress: Brooklyn Signature Hybrid Mattress
- Best latex split king mattress: Nolah Natural 11″ Mattress
- Best memory foam split king mattress: The Purple Mattress
- Best cooling split king mattress: Tempur-Pedic TEMPUR-breeze Mattress
- Best hybrid split king mattress: Nest Alexander Signature Hybrid Mattress
- Best organic split king mattress: Avocado Green Mattress
- Best split king mattress for adjustable base: Leesa Original Mattress
Not to mention, choosing a mattress that fits both you and your sleeping partner’s needs can pose a huge challenge. If you love a firm sleep surface and your partner prefers a soft cushiony bed, you might have a hard time finding a compromise.
Enter the split king mattress. A split king model boasts a king mattress’s jumbo size — split right down the middle to allow for customization on either side. Essentially, it’s two twin XL beds pushed together, typically with a special connector in the middle.
If you decide to invest in a split king, you’ll have a variety of models to choose from. Keep reading for our top 9 picks, plus some tips to narrow down your options based on your individual mattress needs.
Anytime we put together a “best of” list of mattresses, we do some major vetting to ensure we recommend quality products. In creating this list, we prioritized mattress brands with the following:
- Solid company policies. All mattresses on our list come with an in-home trial that allows you to really “sink” into the mattress. Mattresses should come with a warranty of at least 10 years, too. As you shop, it also helps to make sure the mattress will be easy to return if you don’t love it.
- A good reputation and transparent practices. We pick mattresses from brands with good reputations. This means they haven’t been involved in recent lawsuits, their products aren’t on recall, and they have transparent business practices.
- Positive customer reviews. Ultimately, it all comes down to the customer. If everything else seems solid, but people consistently have issues with a mattress, we can’t recommend it in good faith. In short, we search for mattresses with positive reviews. If a number of reviewers seem unhappy about the same issue, we’ll mention that so you have all the info at your fingertips.
Mattresses vary widely in price, but a split king mattress will typically cost more than any other size.
Also factor in the cost of extras, including a bed frame if you don’t already have one. Couples who want the ultimate customized sleep experience might consider a bed frame that allows for independent adjustments on either side.
In this guide, we give prices for a split king mattress — unlike our other mattress guides, which list prices for a queen mattress.
- $ = under $2,000
- $$ = $2,000–$3,000
- $$$ = over $3,000
Best overall split king mattress
- Price: $$$
- Type: adjustable hybrid
- Height: 13 inches
- Who it’s best for: couples with different comfort preferences
- Pros: personalized comfort, generous trial and warranty, excellent reviews
- Cons: some reviewers report edge support issues
You’ll have plenty to customize with the Saatva Solaire. It has up to 50 firmness levels available, and the internal air chamber gradually increases firmness as desired.
For added cozy comfort, this mattress includes an organic cotton pillow top. You can also pair it with an adjustable base, which allows you to raise and lower each side separately. While this add-on will cost you, it may be worth it, depending on your needs.
The lifetime warranty, 365-night trial, and free white-glove delivery help propel this split king mattress to the top of our list. Reviewers love it, too: It has an average rating of 4.7 stars.
Best budget split king mattress
Brooklyn Signature Hybrid Mattress
- Price: $ (based on split California king price)
- Type: hybrid
- Height: 11.5 inches
- Who it’s best for: couples with different comfort preferences, shoppers on a budget, sleepers who run hot
- Pros: choice of firmness levels on both sides, temperature regulating
- Cons: not available in a standard split king
You can’t get a split king version of this mattress, but you can get a split California king. It’s slightly longer, but more room is more room, right? Plus, despite its longer length, it’s still the most affordable mattress on our list.
The great thing about this mattress: You can choose from soft, medium, or firm for each side, so you and your sleeping partner can each opt for your preferred firmness levels. Just keep in mind you’ll need to add each side of the mattress to your cart separately, whether you opt for the same or different firmness levels.
It’s not a cooling mattress per se, but it does feature a gel top that’s designed to help with temperature regulation. Plus, you can upgrade to a cool-to-the-touch cover if you’re willing to spend a little more.
You’ll also get 120 nights to try out the mattress, and if you like and keep it, it comes with a 10-year warranty.
Best latex split king mattress
Nolah Natural 11″ Mattress
- Price: $$$
- Type: latex hybrid
- Height: 11 inches
- Who it’s best for: hot sleepers, shoppers looking for hypoallergenic materials
- Pros: breathable and temperature regulating, eco-friendly materials
- Cons: heavy weight of this mattress makes it hard to move, no choice of firmness levels
This environmentally friendly mattress is made with hypoallergenic Talalay latex, organic cotton and wool, and recycled steel coils.
This mattress clocks in at 6 out of 10 on the firmness scale, or “luxury firm,” according to the brand. In other words, it’s designed to feel comfortable for most people.
You can put it to the test with the Nolah 120-night home trial and free shipping. It comes with a lifetime warranty.
Best memory foam split king mattress
The Purple Mattress
- Price: $
- Type: foam
- Height: 9.25 inches
- Who it’s best for: sleepers looking for pressure point relief, shoppers on a budget
- Pros: good balance of comfort and support, minimal bounce
- Cons: some reviewers report durability issues
In search of a memory foam mattress that helps relieve pressure at your back, hips, and shoulders? The Purple Mattress offers a solid option to consider. The supportive sleep surface costs less than many other split king options because it’s made of foam. The brand’s unique gel grid aims to provide responsive support while also helping you sleep cooler.
You’ll feel medium to firm support from this mattress, depending on your body weight. Purple calls it soft and firm at the same time, saying the grid yields under your hips and shoulders while provide support for your legs and back.
Try it out for 100 nights and enjoy free shipping and returns. You can also purchase the Purple Adjustable PowerBase, which allows you to choose a sleeping position or enable a vibration massage.
Best cooling split king mattress
Tempur-Pedic TEMPUR-breeze Mattress
- Price: $$$
- Type: foam
- Height: 13 inches
- Who it’s best for: hot sleepers
- Pros: cooling features, great reviews, choice of firmness
- Cons: some reviewers say cooling features didn’t work for them
The materials are designed to help regulate body temperature and — unlike other cooling mattresses — actually cool you down, instead of just improving airflow.
It has a firm feel, reviewers say, but you can also customize it to have a soft feel, if you prefer a more cushioning mattress.
The mattress has more than 1,000 positive reviews. Although the price tag is a bit steep, financing is available. You can try it out for 90 days, and you’ll receive free white-glove delivery when ordering.
Best hybrid split king mattress
Nest Sparrow Signature Hybrid Mattress
- Price: $$
- Type: hybrid
- Height: 14 inches
- Who it’s best for: combination sleepers
- Pros: choice of firmness on both sides, great reviews
- Cons: may be too soft for some sleepers, only available in split California king
Nest makes it easy to order and customize a split king mattress. You can choose a different firmness level for each side, but you’ll need to add each side to your cart separately. One drawback: it’s only available as a split California king.
Firmness-wise, reviewers say all options run a little on the softer side, so keep that in mind when making your selection. This mattress may be a good match for side sleepers who prefer a softer bed or people who want more pressure relief.
Shipping and returns are free. Customers who decide to keep their Nest bed after the 365-night trial get a lifetime warranty.
Best organic split king mattress
Avocado Green Mattress
- Price: $$ (based on the cost of two twin XL mattresses)
- Type: hybrid latex
- Height: 11 inches (without pillow top upgrade)
- Who it’s best for: shoppers prioritizing organic materials
- Pros: organic, pillow top upgrade available
- Cons: not offered in a true split king
This popular organic mattress is ideal for people wanting to greenify their sleeping lives. It features Global Organic Textile Standard (GOTS) certified wool and cotton, and Global Organic Latex Standard (GOLS) certified latex.
The hybrid design incorporates coils intended for support and latex foam intended for comfort and pressure relief. Side sleepers may find it too firm, but you do have the option to add a pillow top if you’re partial to a softer sleep surface.
Note: Avocado technically doesn’t sell a split king version of this mattress. Rather, the company sells a split king adjustable bed frame base you can use with two twin XL mattresses. But that means you can easily accommodate the Green and another Avocado mattress (like the Latex or Vegan) in the frame.
Best split king mattress for adjustable base
Leesa Original Mattress
- Price: $ (based on the cost of two twin XL mattresses)
- Type: foam
- Height: 10 inches
- Who it’s best for: shoppers prioritizing social and environmental standards, shoppers who want a mattress for an adjustable base
- Pros: good balance of comfort and support, universally comfortable medium feel
- Cons: not available in standard split king, no choice of firmness
Built with three layers of foam and topped with a fabric cover, the Leesa Original aims to support and comfort you throughout the night with a medium-firm feel.
Its memory foam composition makes it flexible enough to bend with the movement of an inclining and declining base, which makes it a good pick if you need an adjustable bed. Leesa also offers a split king adjustable base that allows you to control each side independently with a wireless remote.
Like some of our other picks, the Leesa Original doesn’t come in a standard split king — you’ll order two twin XL mattresses instead.
This company is a certified B-corporation, which means it meets high social and environmental standards. It also pledges to donate one mattress for every 10 mattresses purchased. You can also rest easy knowing this mattress comes with a 100-night risk-free trial, free delivery, and a 10-year warranty.
Still searching for the right sleep products?
Let us help. Shop our top picks for mattresses by condition or sleeping position to get the sound sleep you deserve.
|Saatva Solaire||$$$||adjustable hybrid||365 nights||lifetime|
|Brooklyn Signature Hybrid||$||hybrid||120 nights||10 years|
|Nolah Natural 11″ Mattress||$$$||latex hybrid||120 nights||lifetime|
|The Purple||$||foam||100 nights||10 years|
|Tempur-Pedic TEMPUR-breeze||$$$||foam||90 nights||10 years|
|Nest Sparrow Signature Hybrid||$$||hybrid||365 nights||lifetime|
|Avocado Green||$$||hybrid latex||365 nights||25 years|
|Leesa Original||$||foam||100 nights||10 years|
Not everyone has the same sleeping habits.
Sleeping with a partner who goes to bed later than you do, or who tosses and turns, can affect your sleep quality — and evidence suggests poor sleep may contribute to conflict in relationships.
If you and your partner are having sleep troubles, you might even wonder whether you should move to a different room altogether. Some people go this route to help keep their relationships healthy.
So if you’re having trouble getting a good night’s sleep next to your partner and don’t want to sacrifice closeness, a split king mattress may offer an ideal solution.
Because each mattress is separate, it can also help isolate movement and prevent disturbances during the night. It can offer greater customization, too.
The downside? There’s a small gap in between the mattresses, so when your partner’s away, you won’t be able to starfish comfortably in the middle of the bed.
When shopping for a split king mattress, here’s what to keep in mind.
One of the main perks of buying a split king lies in customizing your sleep experience from your partner’s. If you and your partner have the same preferences, you may not want to bother paying more for a split model.
Firmness level is a personal preference, but it can affect the performance of the mattress. To someone with more body weight, a medium-firm mattress might feel softer. Likewise, someone with less body weight might find that a medium-firm mattress feels ultra-firm.
Support has more to do with the construction of the mattress. For instance, foam does a great job relieving pressure points, but springs and coils provide more support.
Memory foam also has more of a sinking feeling than an innerspring or hybrid mattress. If you want something with more bounce, opt for a mattress with coils or springs.
However, choosing a responsive surface can also mean it performs poorly in terms of motion isolation. Foam does a much better job absorbing movement than springs.
Make sure you buy from a brand that offers an extended trial period. This is especially important if you buy online, since you won’t have the opportunity to test out your mattress in a store.
Even so, you won’t get a feel for a mattress until you sleep on it for a few weeks. Check that the retailer offers free returns, without any complicated processes. Your mattress should also come with a warranty of at least 10 years.
Buying a split king means you’ll likely have to buy new bedding and possibly a new bed base. Some companies offer extras as add-ons to your purchase. They may even offer a discount if you bundle your purchases in the same order.
If you’re not so concerned about cost, opt for a one-stop shop experience to make your life easier.
Still have questions about split king mattresses? We’ve got answers.
How do you keep a split king mattress together?
Since a split king mattress is made up of two individual pieces, it’s possible for the sides to separate. Using a nonslip mattress pad or mattress connector can help keep them from moving. Another more expensive option is to invest a bed frame specifically designed for a split king.
Can you cuddle on a split king mattress?
Even if there’s a small gap where the mattresses meet, you can still cuddle on a split king mattress. If you find the gap uncomfortable, try filling it with a mattress connector or blanket.
How do you make a split king mattress feel like one bed?
To fill in the gap in a split king mattress and make it feel more like one bed, you can purchase a mattress connector, also called a gap filler, or one mattress topper to cover the whole bed.
What kind of sheets fit a split king mattress?
You’ll need to replace your bedding if you decide to replace your king mattress with a split king. You’ll need two fitted sheets for a twin or twin XL — depending on whether you opt for a California king or not — and a single king-size flat sheet to cover the entire width of the sleep surface.
If you have an adjustable base, this setup will allow you to raise and lower each side separately.
Are your partner’s sleeping habits keeping you lying awake? Can’t agree on the right firmness for your king-size mattress? Opt for a split king instead.
A split king makes a great choice for couples who can’t find a suitable king-size mattress to fit each individual’s needs. You can each choose your preferred mattress type and feel without having to sleep in separate beds.
Steph Coelho is a freelance writer with chronic migraine who has a particular interest in health and wellness. When she’s not click-clacking away on her keyboard, she’s probably nose-deep in a good book.