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Best Split King Mattresses of 2022

Mattress Guides
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Split king mattresses are just about the best innovation in sleep technology for couples since the invention of the mattress. Split kings can solve a lot of the issues couples can experience when sharing a bed. To top it off, there are lots of fantastic options to choose from when selecting a set of split king mattresses. Here are some of the best ones.

Best Split King Size Mattresses of 2022

Best Split King Mattress Overall: Amerisleep AS3

  • Price Range

    See Price

  • Mattress Type

    Memory Foam

  • Thickness

    12 Inches

  • Firmness

    5  to 6 out of 10 (Medium)

  • Warranty

    20 Years

  • Sleep Trial

    100 Nights

Mattress Highlights
  • Cooling, technological cover
  • Zoned relief for shoulders and hips
  • Plant-based foam for cushion
Recommended For
  • Side, back, and combo sleepers
  • Sleepers with allergies
  • Hot sleepers

Couples who need lots of versatility in their split king mattresses should check out the Amerisleep AS3. This mattress is a jack of all trades that can handle lots of different sleep styles and body types. This makes it perfect for those who need versatility – like active and combination sleepers in particular.

How the Mattress Feels

You’ll notice a big difference between the Amerisleep AS3’s memory foam and the average memory foam mattress. This is all thanks to Amerisleep’s proprietary Bio-PurⓇ foam. Unlike most traditional memory foam products, Bio-PurⓇ foam is made using plant oils in lieu of some petroleum products. This makes for a memory foam that fixes a lot of the failings of standard polyurethane.

For example, Bio-PurⓇ foam is much more breathable than standard memory foam. That means it’s a lot cooler for hot sleepers. It’s also much more responsive than standard memory foam, so it bounces right back into place. This makes for a much more comfortable sleep experience than you’d get from a traditional memory foam mattress.

What It’s Made Of

The first layer of the Amerisleep AS3 is the Refresh Cover. This proprietary cover is Amerisleep’s solution to overheating. It responds to your body’s heat, kicking into high gear if you start to get too hot at night. Not only does this cover wick away body heat. It actually converts it into potentially beneficial far infrared energy!

The cover is aided in its heat and sweat-wicking mission by the ultra-breathable Bio-PurⓇ memory foam. This foam isn’t just cooling and responsive. It’s also hypoallergenic for sleepers with allergies or sensitivities to synthetic chemicals.

Underneath the Bio-PurⓇ comfort layer, you’ll find the HIVEⓇ transition layer. This layer offers five zones of pressure relief and support so that each area of your body gets the unique combination it needs to maintain total spinal alignment.

Finally, the Bio-CoreⓇ ultra-high-density foam offers tons of lift to keep your body on top of the upper layers. This layer not only offers fantastic support. It also provides ultimate durability to ensure this mattress lasts the long haul. That’s why Amerisleep offers a generous 20-year warranty on all the mattresses in the AS lineup.

Pros

  • Medium feel can suit most couples' preferences
  • Plant-based memory foam maintains coolness
  • Targeted support in five different areas

Cons

  • Still not as responsive as latex

AMERISLEEP AS3

  • Bio-PurⓇ foam is hypoallergenic, responsive, and cooling
  • High-density core offers lots of lift as well as durability
  • Versatile medium feel offers the perfect balance of pressure relief and support

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Best Split King Memory Foam Mattress: Zoma Mattress

  • Price Range

    See Price

  • Mattress Type

    Memory Foam

  • Thickness

    12 Inches

  • Firmness

    5 to 6 out of 10 (Medium)

  • Warranty

    10 Years

  • Sleep Trial

    100 Nights

Mattress Highlights
  • Gel memory foam soothes aches
  • Responsive transition foam for bounce
  • Airy cover woven for heat dispersion
Recommended For
  • Sleepers with back pain
  • Sleepers with active lifestyles
  • Side, back, and combination sleepers

One of the best split king mattresses for sleepers with active lifestyles is the Zoma Mattress. This sports mattress was designed for athletes, physical workers, and those who just love to hit the gym. That means it’s optimized to offer performance-enhancing sleep.

How the Mattress Feels

The Zoma Mattress is a medium to medium-firm mattress, so you’ll notice right away the scales are tipped a little in favor of support. That makes the Zoma perfect for back sleepers and those with back pain, even if they’re not physically active.

Another thing you’ll notice about the Zoma is its responsiveness. This is a bouncy bed for a memory foam mattress because it features Zoma’s ReactivTM transition layer. This layer helps the gel memory foam above it bounce right back. So you don’t have to deal with body impressions or slow response time.

What It’s Made Of

The first layer of the Zoma Mattress is its ventilated AirCloth cover. This breathable fabric helps keep cool air flowing around your body as you sleep.

Next up, there’s the cooling gel memory foam comfort layer. This thermoconductive gel foam helps draw heat away from your body to keep you cool. It also features three different zones of pressure relief to ensure optimized comfort for each body area.

Underneath the gel foam layer is where you’ll find the ReactivTM transition foam layer. This layer keeps the memory foam bouncy and responsive, so it springs back into place as soon as you move.

Finally, the high-density Support+ foam support core offers lots of lift to fight sinkage and keep you on top of the sleep surface. It also ensures the Zoma will fight sagging and soft spots for a full decade.

Pros

  • Cooling memory foam for cradling comfort
  • Buoyant transition foam adapts near instantly
  • Structural base foam limits sagging

Cons

  • Too firm for most side sleepers

ZOMA MATTRESS

  • Springy transition foam makes the Zoma incredibly responsive for a memory foam mattress
  • Support+ layer helps fight sinkage and keep your spine optimally aligned
  • Ventilated cover keeps cool air flowing for superior temperature regulation

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Best Split King Luxury Mattress: Nolah Evolution 15

  • Price Range

    See Price

  • Mattress Type

    Hybrid

  • Thickness

    15 Inches

  • Firmness

    5, 6 to 7, or 8 out of 10 (Plus, luxury-firm, or firm)

  • Warranty

    Lifetime

  • Sleep Trial

    120 Nights

Mattress Highlights
  • Buoyant transition foams
  • Cooling graphite infusions
  • Heat escape gusset for coolness
Recommended For
  • Hot sleepers
  • Different sleeping styles
  • Sleepers with allergies

Hot sleepers who want the ultimate in cooling should take a good look at the Nolah Evolution 15. This mattress pulls out all the stops to ensure optimum sleep temperature, even for those who feel they heat up like a dutch oven every time they close their eyes!

The Evolution pulls this off with an entire suite of cooling technologies to ensure no matter how much heat your body puts out, it gets wicked away.

How the Mattress Feels

Of course, the first thing you’ll notice about the Evolution is how cool it is. The surface is cool to the touch when you first lie down. But you can expect it to keep its cool throughout the night. So you’re not going to go from a pleasantly chilly bed to a blazing hot nightmare a couple of hours later.

The Evolution also offers a good feel for allergy sufferers. Its graphite infusions don’t just suck heat away from your body. They also make a hostile growing environment for all kinds of microbes that can trigger allergy symptoms, like dust mites and mold and mildew.

What It’s Made Of

The Evolution starts off with its cooling ArcticTexTM cover. This cover is partially responsible for creating that cool-touch feel, while the layers below it help maintain it.

Next up, the Evolution sports a premium cooling Euro topper for extra pressure relief and the AirBreathTM heat escape gusset. This gusset runs around the perimeter of the mattress to ensure hot air gets pushed immediately out of it and does not stagnate under your body.

Below the gusset, a comfort layer of graphite-infused AirFoamICETM helps ensure you stay cool and allergy symptom-free. It also offers buoyant pressure relief to keep you lifted and cradled all at the same time.

Underneath the comfort layer, two transition layers of high-resilience and high-density foam enhance the comfort layer’s buoyancy even more. They also ensure your body is protected from any pressure the high-tension coil support layer might exert on it.

The support layer of this consists of zoned HDMaxTM coils. This coil system features 25 percent more support than standard coil systems to keep your body lifted and your spine aligned. It’s also arranged into different support zones to ensure each area of your body gets the precise amount of support it needs.

Pros

  • Enhanced cooling ability in the Evolution's comfort foam
  • Multiple cooling features for a surface that enables deeper sleep
  • Motion-isolating pocketed coils limit any jarring sensations

Cons

  • Not in every shopper's budget 

NOLAH EVOLUTION 15

  • Heat escape gusset works to keep cool air flowing no matter what
  • Graphite infusions fight microbes and overheating all at once
  • High-tension coils offer lots of support for those who need it

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Best Split King Mattress Bundle: GhostBed Split King Adjustable Set

  • Price Range

    See Price

  • Mattress Type

    Memory Foam or Hybrid

  • Thickness

    Depends on choice of mattress

  • Firmness

    Depends on choice of mattress

  • Warranty

    20 or 25 Years

  • Sleep Trial

    101 Nights

Adjustable Bed Bundle Highlights
  • Choice of four mattresses to bundle
  • Massage features for relaxation
  • Underbed lighting for easy navigation
Recommended For
  • Sleepers with back pain
  • Hot sleepers
  • Couples seeking customizable comfort

Couples who want to put together an easy and convenient split king set that has most of the work already done for them should look at the GhostBed Split King Adjustable Set. This is the best split king size mattress set because it already comes with everything you need! It comes with any two GhostBed twin XL mattresses and two twin XL GhostBed adjustable bases.

How the Mattress Feels

Though you can get any mattress with the Split King Adjustable Set, we recommend the GhostBed Flex. This luxury hybrid offers the perfect combination of cooling features and bouncy coils. That means it will be springy and cool to the touch as soon as you lie down.

Underneath the mattress, the GhostBed Adjustable Base offers tons of features like preset zero-gravity, anti-snore, and TV watching positions. This split king adjustable bed also comes with other features like underbed lighting and USB ports.

What It’s Made Of

The Flex features five layers of cooling technology and two layers of support. The first three layers are in the cover itself. They include a layer of plush quilting, a layer of coo burst fiber, and a layer of gel memory foam. This three-layer cover also sits on top of a gel memory foam comfort layer for added cradling and contouring.

Next, the Ghost Bounce layer delivers even more springiness than the pocketed coil layer below. These coils are reinforced around the edges to offer superior edge support. They also are just the right gauge to keep you feeling like you’re sleeping on a cloud.

Underneath, you’ll have the included adjustable bed frames. The GhostBed Adjustable Base sports a mobile platform with independent head and foot adjustments.

It also boasts a whisper-quiet motor and a two-zone massage feature. Underneath the platform, the adjustable base features legs with customizable height settings to give you your ideal profile.

Pros

  • Cooling technologies for uninterrupted sleep
  • Fifteen near-silent massage modes for easing aches
  • Choose from well-made memory foam and hybrid mattresses

Cons

  • Not for those who want to customize their split king adjustable beds

GHOSTBED SPLIT KING ADJUSTABLE BED SET

  • Split king adjustable base set features everything you need but the sheets
  • Adjustable base has tons of features like massagers, underbed lighting, and USBs
  • Base set allows you to choose whichever set of GhostBed mattresses fits your needs

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Best Split King Size Smart Mattress: Saatva Solaire

  • Price Range

    See Price

  • Mattress Type

    Airbed

  • Thickness

    13 Inches

  • Firmness

    Adjustable

  • Warranty

    25 Years

  • Sleep Trial

    180 Nights

Mattress Highlights
  • Latex offers responsive comfort
  • Allergy fighting ingredients
  • Personalized firmness for sleepers
Recommended For
  • Sleepers with (non-latex) allergies
  • Hot sleepers
  • All sleeping styles

The Saatva Solaire is a unique mattress that allows you to choose between over 50 firmness settings. This allows you to customize your mattress for your needs, taking into account your body type and sleeping position.

How the Mattress Feels

Lying down on the Solaire feels luxuriously cool and pressure relieving, even for the firmer feels. This is all thanks to the breathable quilted Euro top that provides cradling and coolness all in one layer.

One of the best features of this split king mattress is that you can actually create a dual-firmness split queen. So couples who need a smaller bed can still have a split mattress that meets their own firmness needs.

What It’s Made Of

The first layer of this mattress is the plush quilted Euro topper. This top features GuardinTM botanical antimicrobial treatments to fight dust mites and other yucky things that can get into your bed.

Next, you’ll find a one-inch layer of springy natural latex that’s also resistant to mold, dust mites, and other allergens. This layer sits atop a layer of gel memory foam to offer even more coolness and contouring.

The moisture barrier layer comes next. This layer protects the internal components of the mattress to prevent moisture buildup and bacterial growth.

The support core consists of anti-sink vulcanized air chambers that maintain even firmness throughout the mattress. These air chambers are what allow you to choose the exact firmness you want. Finally, the reinforced power edge encloser provides stability and keeps air hoses out of sight.

Pros

  • Antimicrobial treatment on the cover for a clean surface
  • Air chambers allow dozens of potential firmnesses
  • Works well with Saatva's adjustable bed

Cons

  • Not for those with latex allergies

SAATVA SOLAIRE

  • Air chambers allow for personalized firmness settings
  • Gel memory foam helps draw heat away from your body
  • Split queen size also available

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Best Split King Size Hybrid: Brooklyn Bedding Sedona Hybrid

  • Price Range

    See Price

  • Mattress Type

    Hybrid

  • Thickness

    14 Inches

  • Firmness

    5 to 6 out of 10 (Medium)

  • Warranty

    10 Years

  • Sleep Trial

    120 Nights

Mattress Highlights
  • Advanced cooling fabric limit heat
  • Memory foam cushions the body
  • Premium coils for supportive comfort
Recommended For
  • Side, back, and combination sleepers
  • Sleepers seeking a luxury mattress
  • Hot sleepers

Sleepers looking for the quintessential hybrid experience should consider the Sedona Hybrid by Brooklyn Bedding. This hybrid offers everything you’d expect from the best of the best: layers of comforting memory foam and premium coils for extra bounce.

How the Mattress Feels

One thing you will notice about the Sedona is its extreme contouring. The memory foam layers combine with the premium coils to create a mattress that can adapt to your shape from top to bottom.

What It’s Made Of

The top layer of this mattress features the woven top knit cover that has hexagonal cooling channels for maximum airflow.

Under this cover, a top layer of patented comfort foam offers fantastic cradling and responsiveness. A secondary layer of higher density gel memory foam helps promote even more cooling and keeps you lifted onto the sleep surface.

Underneath this layer, you’ll find a layer of hyper-dense, slow-response memory foam that provides deep compression and contouring. Then, an intermediate layer of high-density foam provides a buffer between the upper foam layers and the coils.

The AscensionTM coil layer supports all these layers above. These premium coils offer maximum contouring to ensure the mattress can adapt to your shape from the cover through the core.

Pros

  • Luxurious feel mimics a hotel bed's comfort
  • Surface contours very close to the body for support
  • Responsive, motion-isolating core of pocketed coils

Cons

  • Not for those who want natural ingredients

BROOKLYN BEDDING SEDONA HYBRID

  • Premium comfort foams enhance contoured pressure relief even more
  • Advanced cooling fabric keeps the surface of the bed pleasantly chilly
  • Premium AscnesionTM coils offer maximum contouring for optimal pressure relief and spinal alignment

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Best Internal Split King Size Mattress: Nest Bedding Sparrow

  • Price Range

    See Price

  • Mattress Type

    Hybrid

  • Thickness

    12 Inches

  • Firmness

    3, 5, or 8 out of 10 (Plush, medium or firm)

  • Warranty

    Lifetime

  • Sleep Trial

    365 Nights

Mattress Highlights
  • Single bed with no gap in the middle
  • Cooling gel and coils for bounciness
  • Choice of firmnesses on each side
Recommended For
  • Stomach sleepers (firm)
  • Side sleepers (plush)
  • Combination sleepers (medium)

If you want a single split king mattress rather than two separate twin XL mattresses, you should check out the Sparrow by Nest Bedding. This split king mattress offers customizable firmness on each side of the bed without that annoying seam in the middle.

How the Mattress Feels

The way lying down feels depends on the firmness level you choose for your side of the bed. You can pick between three settings: plush, medium, and firm. That means each side of the bed will have a different feel based on your selections.

One thing you will notice consistently across all the firmness levels is the Sparrow’s coolness. This mattress combines gel memory foam with breathable coils and a phase-changing cover to ensure maximum coolness no matter the firmness.

What It’s Made Of

The first layer of the Sparrow is the THERMICTM phase-change cover with quilted gel memory foam sewn right in. This helps draw body heat away from you right out of the gate.

Next comes the EnergexTM temperature responsive foam. This foam offers dynamic pressure relief and temperature regulation to help pull heat even further away from your body than the cover alone.

Underneath the comfort layer is the high-density SmartFlow support foam. This foam helps increase the buoyancy of the layers above to ensure you stay lifted onto the top of the sleeping surface.

Finally, you’ll find the pocketed coil support layer. These pocketed coils are reinforced around the perimeter for superior edge support across the whole mattress, regardless of firmness.

Pros

  • Internal split in king or Cal king mattresses, no gaps
  • Customizable firmness for each partner's comfort
  • Multiple cooling features keep couples sleeping well

Cons

  • Won’t work with different adjustable bed settings

NEST BEDDING SPARROW

  • No gap in the middle that couples will roll into as they sleep
  • Cooling technologies work in unison to keep you from overheating
  • Customizable firmness allows each sleeper to get what they want on their side of the bed

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Best Split King Mattress for Side Sleepers: Purple Plus

  • Price Range

    See Price

  • Mattress Type

    Foam

  • Firmness

    4 to 5 out of 10 (Medium-Soft)

  • Thickness

    11 Inches

  • Warranty

    10 Years

  • Sleep Trial

    100 Nights

Mattress Highlights
  • GelFlex Grid for reactive cushion
  • Air channels whisk heat away
  • Premium foam for extra conformability
Recommended For
  • Hot sleepers
  • Side and combination sleepers
  • Shoppers seeking pressure relief

Hot sleepers who just can’t seem to cool down no matter what should consider the Purple Plus mattress. This mattress uses hundreds and even thousands of air channels to ensure air keeps flowing regardless of how much heat you put out or what position you adopt during sleep.

How the Mattress Feels

The Purple Plus features an extra layer of foam for added pressure relief. That makes it a bit softer and more cradling than the original Purple Mattress. That said, the Plus still features Purple’s proprietary Purple Grid.

That means you’ll still feel all the incredible breathability you expect from the Purple Mattress. The GelFlex material is about 80 percent air, so it keeps cool air flowing under you all night while drawing heat away at the same time.

What It’s Made Of

The first layer of the Plus is its SoftFlex knit cover. This cover is designed to let you feel just how responsive and cooling the Grid actually is. Right underneath the cover sits the GelFlex Grid itself. This two-inch Grid contours to the shape of your body to relieve pressure points and keep your spine fully aligned.

Next, you’ll find an extra two inches of premium comfort foam that responds quickly to movement and offers even more cradling than the original foam alone.

Finally, you’ll find the original comfort foam support layer. This layer offers an ideal combination of contouring and support to ensure you stay lifted onto the sleep surface without winding up experiencing too much pressure.

Pros

  • Grid layer's squares double as airflow channels
  • GelFlex adapts to the body as sleepers stretch out
  • Sturdy base foam keeps the mattress standing strong

Cons

  • Potentially too soft for stomach and heavier sleepers

PURPLE PLUS

  • Firm Original Comfort Foam still keeps you lifted onto the sleep surface
  • Additional premium memory foam offers extra softness and cushioning
  • Purple Grid features thermoconductive gel and air channels for optimal cooling

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Best Luxury Split King Mattress: Helix Midnight Luxe

  • Price Range

    See Price

  • Mattress Type

    Hybrid

  • Thickness

    14 Inches

  • Firmness

    5 to 6 out of 10 (Medium)

  • Warranty

    15 Years

  • Sleep Trial

    100 Nights

Mattress Highlights
  • Reinforced coils for support
  • Gel visco foam for cradling feel
  • Cooling cover for better sleep
Recommended For
  • Hot sleepers
  • Side and combo sleepers
  • Sleepers who love luxury

Those looking to upgrade their sleep with an incredibly luxurious mattress that doesn’t come with a luxury price tag should check out the Helix Midnight Luxe. This mattress isn’t the most affordable one on this list, but for a luxury product, it’s downright inexpensive! That makes it the best split king size mattress for those on a limited budget to enjoy a little indulgence.

How the Mattress Feels

The Midnight Luxe features layers of cushioning and buoyant foams that keep you supported and cradled at the same time. So the first thing you’ll notice about this mattress is just how cushy it is. It relieves pressure on the hips and shoulders while keeping you lifted onto the sleep surface all at once.

You’ll also notice the Midnight Luxe is pleasantly cool. It features a choice of cooling cover. You can either pick TENCELTM or GlacioTex fabric. Either way, the cover will keep you cool as a cucumber all night long.

What It’s Made Of

The first layer of the Midnight Luxe is its cooling cover. With the cover, you have a choice between breathable TENCELTM and thermoconductive GlacioTex fabric.

Whichever cover you choose, it will sit atop a layer of high-density Memory Plus Foam. This memory foam offers plenty of pressure relief and buoyancy all at once.

Next up, a layer of gel visco adds even more cushioning and support to the high-density foam comfort layer. This visco also helps add temperature regulating power and responsiveness to the comfort layer so that you never have to worry about overheating or body impressions.

Underneath, a layer of high-grade polyfoam offers seamless progression from foam to coil and protects your body from pressure from the coils below.

Finally, the Midnight Plus offers a softer feel under your shoulders and a firmer feel around your middle to keep your spine perfectly aligned. This mattress also features a reinforced coil perimeter for total edge support without heat retention.

Pros

  • Targeted support for shoulders and hips
  • Upgradeable cooling cover for better heat dispersion
  • Strengthened coils along the side for edge support

Cons

  • Might still be too expensive for some shoppers

HELIX MIDNIGHT LUXE

  • Reinforced coils around the perimeter and middle offer spinal alignment and edge support
  • Gel visco increases responsiveness and cooling while simultaneously offering cushioning and support
  • Luxury foams provide a buoyant and cradling feel for those who need a mix of both

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What is a Split King Bed?

A split king size bed is created when you place two twin XL mattresses in a single standard king size bed frame. This allows each side of the bed to have a different feel in terms of firmness level, material, and more.

A split king size mattress also allows each partner to choose their own adjustable bed settings without disturbing the other partner. Not to mention all the health benefits split king beds offer!

How to Make a Split King

Split king size beds aren’t like other beds because you’ll need two separate bed bases and mattresses, as well as a special set of sheets. To make a split king, you’ll need a few ingredients:

  • A king size bed frame
  • Two twin XL mattress bases
  • Two twin XL mattresses
  • A split king sheet set

You’ll put the two twin XL mattress bases in the king bed frame. These can be adjustable bases, mattress foundations or box springs (depending on what kind of mattress you have). Just so long as you’re using a standard king frame and two twin XL bases, they will work.

Next, you’ll add your twin XL mattresses for a split king on top of your bed bases and then put the split king bedding set on top of that. Split king bedding sets typically come with:

  • Two twin XL fitted sheets
  • A single king size flat sheet
  • A single blanket, duvet or comforter

If you want to disguise your split king as a standard king mattress, you can do so with a king size mattress topper to hide the gap between mattresses and a set of king sheets.

Benefits of a Split King

The split king mattress has several advantages over a regular king for couples. One of the biggest advantages that all couples can enjoy is complete motion isolation.

Even if you don’t need different adjustable bed settings or firmness levels, sleeping on two separate mattresses offers far superior motion isolation than sleeping on one, creating one of the most comfortable mattresses for partners.

Another big benefit is that split kings allow couples to meet their own individual sleep needs while still co-sleeping in the same bed. This isn’t just a matter of convenience. Different body types and sleep styles have different sleep needs. We have guides that discussed the best mattresses for every sleep position:

If the needs for even the best sleeping position aren’t met, it can lead to all kinds of things from spinal misalignment to joint and back pain to snoring. Needless to say, all these issues can reduce the quality and quantity of your sleep. For example, a too-firm mattress can cause back pain.

So it really is vital for each member of a couple to get the right mattress firmness and material they need. Split kings also allow couples to meet their own adjustable base needs (more on this below).

Split king beds aren’t just convenient while you’re sleeping. They’re also a lot easier to move. Twin XL mattresses are much lighter and less cumbersome than king mattresses. So if you relocate a lot, it may be worth it to sleep on a split king just for the convenience of moving it.

Cost of a Split King

The cost of a split king is one of its main downsides. Most of the time, purchasing two twin XL mattresses is more expensive than purchasing a single king mattress of the same brand and model. And that’s not to mention the expense of picking out two different twin XL mattresses. Many split king beds are excellent mattresses under $2000, but some may be more expensive than this.

You don’t just have to think about the cost of a split king bed itself. You’ll also need to think about the cost of accessories like sheets and split king bed bases. A split adjustable king may be more expensive than a regular adjustable king – and sheets definitely will be.

You may even need to buy some simple accessories like elastic straps for bedding if you’re using sheets with an adjustable bed. With all this in mind, expect to pay up to several hundred dollars more to finish up your split king bed than you would a standard king bed.

Adjustable Split King Beds

Adjustable split king beds offer a host of health benefits all their own – though that really goes for all adjustable beds. With an adjustable split king, each partner can choose their own sleeping position.

One can assume the zero-gravity position, while the other just elevates the legs or the head. One partner can sleep sitting up, while the other lies flat. The possibilities are practically endless.

And we haven’t even gotten into the health benefits of adjustable bases themselves. Adjustable beds can help alleviate a host of health issues. One of their best features is that they use gravity to reduce a host of symptoms.

For instance, sleeping with the head elevated can help reduce sleep apnea symptoms. When you have sleep apnea, the soft tissues in your throat fall into your airways when your muscles relax after you fall asleep. Keeping your head above your chest as you sleep allows gravity to work for you, keeping your throat tissues in place.

Gravity can also work for you if you suffer from nocturnal acid reflux. Keeping your head above your stomach lets gravity hold your stomach acid in place while you’re sleeping. This means no more midnight pain.

On the flip side, sleeping with your legs elevated over your heart can help increase circulation. It can also reduce symptoms related to fluid buildup and edema. All in all, putting your adjustable base into the right position for you can help alleviate all kinds of issues.

Some couples may hesitate at how an adjustable bed looks, as many have a mechanical appearance. However, many can be slipped inside a bed frame, and owners can typically attach a headboard or use a bed skirt with an adjustable bed.

FAQs

How do I know if my partner and I need a split king?

If you and your partner have similar sleep needs, chances are you don’t need a split king. For instance, if you’re both side sleepers who weigh between 130 and 230 pounds, it’s likely you can both sleep on the same king size mattress. However, there are several scenarios in which you might need to consider a split king.

If you and your partner are different sizes or have vastly different sleep styles, you may not be able to compromise comfortably on firmness level. In that case, a split king bed can allow both of you to get the firmnesses you need. You and your partner might also have different temperature regulation needs that cause you to need different mattress materials.

Another big reason you might need a split king bed is if you have different ideal adjustable base settings. For instance, if one partner wants to lie flat while the other wants to adopt the zero-gravity position, you’ll need a split king to achieve that.

Can two twin mattresses make a split king?

No. Two standard twin mattresses do not make a split king because they are too short for a king bed frame. Regular twin mattresses are 38 by 75 inches.

Meanwhile, twin XL mattresses are 38 by 80 inches. That means they’re both the correct width and the right length to fit perfectly into a king size bed frame.

Is it possible to get a split California king?

If you want a split California king, there are plenty of mattress manufacturers that can make that happen. However, you need to be aware that getting a split California king is going to be more difficult and likely more expensive than a standard split king bed.

With a regular split king bed, you can put any old pair of twin XL mattresses you want in your bed frame. However, there is no mattress in the standard mattress size run that pairs up to create a California king’s dimensions. Twin XLs are too wide and too short.

That means your split California mattresses will have to be specifically made for the purpose of creating a split California king. They do make mattresses for this purpose. So you won’t necessarily have to have your Cal king mattresses custom-made. But they’ll likely be more expensive and tougher to find than regular split king mattresses.

Can I still use an adjustable bed if my king size bed is not split?

You can use adjustable beds with regular king size mattresses. The only real difference between adjustable split kings and a regular king size adjustable beds is that the entire mattress will shift up and down with a regular king.

If you and your partner both enjoy using the same adjustable bed settings, then you should have no issue using a regular king size adjustable bed rather than a split one.

However, if you think you might want to utilize different settings, you’ll need to at least consider splitting your mattresses.

How do adjustable split kings work?

With an adjustable split king bed, basically everything from the bed bases to the twin XL fitted sheets is split. You’ll have two twin XL adjustable bases, two twin XL mattresses, and a pair of fitted sheets. The only things that won’t be split are the bed frame itself (if you have one) and the flat sheet and comforter.

This might sound like an unnecessarily complicated setup, but the rewards are so worth the trouble at the beginning. Split king adjustable bases allow each partner to meet their own sleeping position needs. They’re also much more convenient to relocate than regular king beds.

Bottom Line

Split king beds are a wonderful mattress for couples who have different sleep needs because they allow you to share a bed without sharing a bed.

You can get different materials and firmness levels and adjustable base settings all in the same bed frame. So even couples with the most divergent sleep needs can get a good night’s sleep on one of the best mattresses!

Harrison Wall is Sleep Junkie’s business strategist and sleep analyst. He also authors posts on bedding and mattress accessories. Harrison regularly coordinates with new mattress companies and tests their products to determine what really helps you get better rest and have brighter mornings.

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