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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.

It can be difficult to choose a mattress that fits both you and your sleeping partner. If you love a firm sleep surface and your partner prefers a soft 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.

You can choose from a variety of models if you decide to invest in a split king. Keep reading for our top 9 picks, plus some tips to narrow down your options based on your needs.

We do a lot of vetting to make sure we recommend the best mattresses. We prioritized the brands in this list.

  • 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

A split king mattress will cost more than any other size.

“If you don’t already have a bed frame, you should consider the cost of extras. A bed frame that allows for independent adjustments on either side is a good option for couples who want the ultimate sleep experience.”

We give prices for a split king mattress, unlike our other mattress guides, which only list prices for a queen mattress.

  • $ = under $2,000
  • $$ = $2,000–$3,000
  • $$$ = over $3,000

Best overall 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: some reviewers report edge support issues

You will have to modify the Saatva Solaire. It has up to 50 levels of firmness, and the internal air chamber gradually increases it.

This mattress has an organic cotton pillow top. You can raise and lower it on its own with an adjusted base. This add-on will cost you, but it may be worth it.

The lifetime warranty, free white-glove delivery, and a trial help propel this split king mattress to the top of our list. It has an average rating of over five 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 get a California king version of the mattress, but it is not a split king version. It is slightly longer, but more room is available. It is still the most affordable mattress on our list.

You and your sleeping partner can choose from soft, medium, or firm for each side, so you can choose your preferred firmness levels. You need to add each side of the mattress to your cart separately if you choose to go for the same or different firmness levels.

It is not a cooling mattress, but it does have a gel top that helps regulate the temperature. If you want to spend more, you can upgrade to a cool-to-the-touch cover.

You will get 120 nights to try out the mattress, and if you like it, you can keep it for a decade.

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

The mattress is made with recycled steel and is made with organic cotton and wool.

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.

The mattress is rated at 6 out of 10 on the scale. It is designed to feel comfortable for most people.

You can try it out for 120 nights with the Nolah trial. It has 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: 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 will feel firm support from this mattress. The grid is soft and firm at the same time, according to purple, which provides 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: some reviewers say cooling features didn’t work for them

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 cool you down, instead of just improving air flow.

Reviewers say it has a firm feel but you can change it to have a softer feel if you prefer a more cushiony mattress.

The mattress has received a lot of positive feedback. Financing is available, even though the price is steep. You can try it out for 90 days and get free delivery.

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

It is easy to order and personalize a split king mattress. You can choose a different level of firmness for each side, but you have to add each side to your cart. It is only available as a split California king.

Reviewers say that all options run a little softer than you might think, so keep that in mind when you make your selection. This mattress is a good match for people who like a softer bed or people who want more pressure relief.

Shipping and returns are free. After the trial period, customers who decide to keep their bed 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 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 design includes latex foam for comfort and pressure relief. If you prefer a softer sleep surface, you can add a pillow top.

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

The Leesa Original is made with three layers of foam and a fabric cover to provide 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.

“The Leesa Original doesn’t come with a standard split king, but you can get two twin XL mattresses instead.”

The company is a certified B-corporation, which means it is in compliance with high social and environmental standards. It pledges to donate one mattress for every 10 mattresses purchased. This mattress comes with a risk-free trial, free delivery, and 10-year warranty, so you can rest easy.

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.

Mattress Cost Type Trial period Warranty
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

Some people have 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.

Hold on, though. According to 2020 research, sleeping in a bed with your partner may improve sleep quality by increasing the amount of time you spend in REM sleep.

“If you don’t want to sacrifice closeness, a split king mattress may be an ideal solution.”

The separate mattress can help prevent movement and keep the night calm. It can offer more options.

“The downside? When your partner is away, you won’t be able to starfish in the middle of the bed because of a small gap between the mattresses.”

Here are the things to keep in mind when shopping for a split king mattress.

Firmness level

Buying a split king is one of the main perks of it. If you and your partner have the same preferences, you may not want to pay more for a split model.

The performance of the mattress can be affected by the firmness level. A medium-firm mattress might be softer for someone with more body weight. Someone with less body weight might find a medium-firm mattress very firm.

Mattress type

The construction of the mattress has more to do with support. foam does a great job of deflating pressure points, but springs and coil provide more support.

The memory foam has a sinking feeling. If you want a mattress with more bounce, you should go for a mattress with springs.

It can be a bad idea to choose a responsive surface because it can be bad in terms of motion isolation. The foam absorbs movement better than springs.

Company policies

“Make sure you buy from a brand that has an extended trial period. This is important if you buy online since you won’t have the chance to try out your mattress in a store.”

“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. The mattress should have a 10 year warranty.”

Available extras

Buying a split king means you will have to buy new bedding and a new bed base. Extras are add-ons that are offered by some companies. If you bundle your purchases in the same order, they may offer a discount.

“If you don’t mind cost, you can opt for a one-stop shop experience.”

Have you still had questions about split king mattresses? We have answers.

How do you keep a split king mattress together?

The sides of a split king mattress can be separated. A mattress pad or mattress accessory can help keep them from moving. A bed frame specifically designed for a split king is more expensive.

Can you cuddle on a split king mattress?

Even if there is a small gap between the mattresses, you can still sleep on a split king mattress. If you find the gap uncomfortable, try filling it with a mattress accessory.

How do you make a split king mattress feel like one bed?

A mattress accessory called a mattress connector or a mattress topper is a way to fill in the gap in a split king mattress.

What kind of sheets fit a split king mattress?

If you decide to replace your king mattress with a split king, you will need to replace your bedding. You will need two fitted sheets for a twin or twin XL, and a single king-size flat sheet to cover the entire width of the sleep surface if you choose a California king.

This setup will allow you to raise and lower the side you have an adjusted base on.

Are your partner sleeping? Can you not agree on the right mattress? You can choose a split king.

“A split king is a great choice for couples who can’t find a suitable king-size mattress to fit each individual’s needs. You can choose your 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.