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Sleeping in the same bed as someone else can be delightful and comforting. It could also disrupt your sleep quality — especially if you sleep next to someone who perpetually tosses and turns.

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.

A split king mattress might be a great solution. Read on to find out more about split king mattresses and discover our top picks.

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.

Pricing guide

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 luxury split king mattress

Saatva Solaire 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: edge support issues, according to some reviewers

You’ll have plenty to customize with the luxurious 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.

Buy the Saatva Solaire online.

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.

Buy the Brooklyn Signature Hybrid Mattress online.

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.

Latex is naturally pressure relieving, supportive, and temperature regulating. The Nolah Natural mattress features two layers of latex, punctured for extra breathability and cooling. Not a fan of the sinking sensation of memory foam? Latex offers a great alternative for a more buoyant, cooler feel.

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.

Buy the Nolah Natural 11″ Mattress online.

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: durability issues, according to some reviewers

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.

Buy the Purple Mattress online.

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: cooling features didn’t work for some reviewers

If you regularly find yourself sweating in the middle of the night, this high end cooling mattress may be right for you. It’s designed to help you stay cool and comfortable for better sleep.

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.

Buy the Tempur-Pedic TEMPUR-breeze Mattress online.

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.

Buy the Nest Sparrow Signature Hybrid Mattress online.

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 great 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 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.

Buy the Avocado Green Mattress online.

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.

Buy the Leesa Original Mattress online.

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.

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MattressCostTypeTrial periodWarrantyBest for…
Saatva Solaire$$$adjustable hybrid365 nightslifetimea luxury feel
Brooklyn Signature Hybrid$hybrid120 nights10 yearsbudget pricing
Nolah Natural 11″ Mattress$$$latex hybrid120 nightslifetimelatex
The Purple$foam100 nights10 yearsmemory foam
Tempur-Pedic TEMPUR-breeze$$$foam90 nights10 yearscooling
Nest Sparrow Signature Hybrid$$hybrid365 nightslifetimehybrid
Avocado Green$$hybrid latex365 nights25 yearsorganic materials
Leesa Original$foam100 nights10 yearsadjustable base

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.

You’ll need to buy new fitted sheets to fit this mattress size because of the split configuration. Your old king-sized fitted sheet won’t work.

If you decide to invest in a split king, you’ll have a variety of models to choose from, from adjustable models that let you customize every aspect of the mattresses’ firmness and feel to ones made with organic materials.

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 a 2013 study suggested that low sleep quality contributed to conflict in relationships.

If you and your partner are having sleep troubles, you might even wonder whether it might help to move to a different room altogether. Some people go this route to help keep their relationships healthy.

Hold on, though. According to a 2020 study, the participants that slept in the same bed as their partners improved their sleep quality by increasing the amount of time they spent in REM sleep.

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 a great 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.

Firmness level

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.

Mattress type

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 doesn’t perform as well in terms of motion isolation. Foam does a much better job absorbing movement than springs.

Company policies

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.

Available extras

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.

Do I need a special bed frame for a split king mattress?

No, you don’t necessarily need a special bed frame for a split king mattress. A regular split king mattress can fit in any king-sized bed frame. However, you’ll need an adjustable base if you purchase an adjustable split king mattress.

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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.

Can you feel the split in a split king bed? 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.