9 Best Split King Mattresses (November 2026)

The best best split king mattresses include the MLILY EGOHOME King 14 inch Memory Foam for a shared king surface, the Novilla Bliss Mattress King Size for pressure-relieving foam, and the Marsail Split King Adjustable Bed Frame for a paired base and mattress set.

On this page (6 sections)

1. How we chose the best split king mattresses
2. The best split king mattress picks
3. How should you choose between Twin XL pairs and one-piece mattresses?
4. Which mattress feel works best for a split king?
5. How can you reduce the gap between split king mattresses?
6. What should you check before buying a king split mattress?

The best split king mattress setup is two Twin XL mattresses, because each side can move independently on a split base. For one shared sleep surface, a standard king mattress may suit a fixed base, but check compatibility before pairing it with a split adjustable base.

This roundup includes mattress-only choices, complete base-and-mattress sets, and a gap filler. Those products solve different parts of the setup, so compare the configuration first, then narrow by feel and material.

If you're still deciding which mattress to buy, start with your preferred feel and the kind of base you own.

Our picks at a glance

1. 1
   Best for a shared king surface

   MLILY EGOHOME King 14 inch Memory Foam

   9.7/10 our score

   See it on Amazon
2. 2
   Best for pressure-relieving foam

   Novilla Bliss Mattress King Size

   9.6/10 our score

   See it on Amazon
3. 3
   Best for a paired base and mattress set

   Marsail Split King Adjustable Bed Frame

   9.6/10 our score

   See it on Amazon

4. 4

   ESHINE Split King Adjustable Bed Frame

   Best for an included hybrid mattress
   Check it
5. 5

   EGOHOME Split King Adjustable Bed Frame

   Best for a medium-firm foam set
   Check it
6. 6

   Vekkia 75” Split King Gap Filler

   Best for softening the center gap
   Check it
7. 7

   Nectar 12” Memory Foam Mattress

   Best for a firmer shared king
   Check it
8. 8

   Purple Mattress

   Best for a split king surface
   Check it
9. 9

   Celestial Sleep 12 Inch Split King Mattress

   Best for a soft split king option
   Check it

How we chose the best split king mattresses

The best split king mattress for your bed depends on whether you need two separate Twin XL surfaces, a shared king surface, or a complete adjustable set. We compared size, construction, feel, and the included components to show where each pick fits.

A true paired setup needs two compatible mattresses, one for each half of the base. Some picks below are complete sets, while others are one-piece king mattresses or accessories, so read each configuration carefully before you buy.

If each sleeper wants an independent position, a split base adjustable bed guide explains how the two sides work. For more on flex and material fit, see what mattresses work with adjustable bases.

Our scores weigh the stated specs and features against the needs of someone shopping for a split king setup.

The best split king mattress picks

The top choices include complete paired sets and mattresses for shoppers who want a particular feel or surface. Check the size and included pieces first, since a king mattress and a split king set are not interchangeable.

1

MLILY EGOHOME King 14 inch Memory Foam: Best for a shared king surface

9.7/10Our score

• 14 in memory foam
• Medium firm
• Low motion transfer
• 80 x 76 in

A standard king mattress for a shared surface, with memory foam and a medium-firm feel. It isn't a pair of Twin XL mattresses, so confirm your base takes one-piece king mattresses.

See it on Amazon

Pros

• Medium-firm feel
• Low motion transfer
• Compressed in a box

Cons

• Standard king format
• No trial period; opened mattresses cannot be returned

The MLILY EGOHOME is a 14-inch medium-firm memory foam king mattress with low motion transfer. If you prefer coils, compare medium-firm King hybrid mattresses.

That combination may suit couples who want less movement across a shared surface, but it is a standard king rather than two Twin XL mattresses.

Its foam layers include copper gel aerofuion memory foam, Adaptifoam, and a high-density base foam. The cover combines cooling fabric with graphene technology, while the inner cover provides a flame-retardant layer without fiberglass, according to the product details.

The mattress arrives compressed in a box and needs 12 hours to expand fully. MLILY includes a 10-year limited warranty, but there is no trial period and opened mattresses cannot be returned.

Choose this if your bed uses one king mattress and a medium-firm foam feel appeals to you. If your adjustable base moves left and right separately, look at a paired configuration instead; the best king mattress for adjustable base guide can help with compatibility choices.

2

Novilla Bliss Mattress King Size: Best for pressure-relieving foam

9.6/10Our score

• 14 in gel memory foam
• Medium plush
• Three foam layers
• 80 x 76 in

A one-piece king mattress with gel memory foam and a medium-plush feel. Its three foam layers and motion absorption may suit couples who prefer a shared mattress.

See it on Amazon

Pros

• Gel memory foam
• CertiPUR-US certified foam
• 100-day free trial

Cons

• One-piece king format
• Allow up to 72 hours to regain full shape

Novilla's Bliss is a 14-inch medium-plush king mattress made with three foam layers, including NanoGel memory foam. Its one-piece king size suits a shared surface, not independent movement on a split base.

The soft knitted cover is made with breathable knit fabric. Novilla says the gel memory foam helps dissipate heat, while the layered construction absorbs movement and has reinforced edge support.

For more cooling choices, see cooling King size mattresses.

Novilla provides a 100-day free trial and 10-year protection. The mattress is compressed in a box and typically takes up to 72 hours to regain its full shape.

Choose this if you want a one-piece king mattress with a softer feel and foam construction. For a couple wanting separate adjustment, compare it with the best adjustable bed mattress options and confirm the mattress size against your base.

3

Marsail Split King Adjustable Bed Frame: Best for a paired base and mattress set

9.6/10Our score

• Split king base and mattress set
• 14 in Twin XL mattresses
• Independent head and foot incline
• Two memory presets

This set combines a split king base with two 14-inch Twin XL mattresses. Each side has head and foot incline, so it addresses the paired setup directly.

See it on Amazon

Pros

• Two Twin XL mattresses
• Two memory presets
• Three-speed vibration massage

Cons

• Includes a base, not just mattresses
• Mattresses need up to 72 hours to fully expand

Marsail is a split king adjustable bed set with two 14-inch Twin XL mattresses, so it covers both the base and mattress parts of the setup. Each side has independent head and foot incline, and the remote includes two memory presets.

The three-layer memory foam mattresses have a graphene-infused cover and breathable open-cell foam. Marsail says the design helps dissipate heat.

The mattresses are vacuum-compressed, with full expansion taking up to 72 hours.

The frame also has Zero Gravity and TV modes, plus three-speed vibration massage. Assembly involves attaching the legs, connecting the power cords, and installing the mattress retainer bars without tools.

Choose this if you want a matched adjustable base and mattress set in one purchase. If you already own a base, the included frame may be unnecessary, so compare the mattress configuration and compatibility before choosing it.

4

ESHINE Split King Adjustable Bed Frame: Best for an included hybrid mattress

9.5/10Our score

• Split king base and mattress set
• 14 in luxury hybrid mattress
• 55° head tilt
• 42° foot elevation

ESHINE pairs an adjustable split king base with a 14-inch hybrid mattress. It suits shoppers who want a coordinated set and hybrid construction.

See it on Amazon

Pros

• Hybrid mattress included
• Three remote memory presets
• Dual USB ports

Cons

• Ships in 4 boxes that may arrive separately
• Base requires assembly

ESHINE combines a split king adjustable base with a 14-inch hybrid mattress. Its listed configuration suits someone who wants a base and mattress together, though the available details do not specify whether the mattress is supplied as two pieces.

The remote includes Zero Gravity, Anti-Snore, and three memory presets. The base offers 55-degree head tilt and 42-degree foot elevation, along with massage modes, under-bed lighting, and dual USB ports.

The set ships in four boxes that may arrive separately. ESHINE gives a 10-year limited warranty for the steel base, a 3-year limited warranty for specified parts, and a 1-year warranty for the remote.

Choose this if a hybrid mattress and adjustable base bundle fit your plans. Before ordering, confirm the mattress piece count and dimensions so they match the split king base.

5

EGOHOME Split King Adjustable Bed Frame: Best for a medium-firm foam set

9.3/10Our score

• Split king base and mattress set
• 14 in cooling memory foam
• 58° head elevation
• 37° leg lift

This bundle includes two adjustable bases and two mattresses, with a 14-inch medium-firm gel memory foam mattress for each side. Check that the two-base arrangement fits your room and frame.

See it on Amazon

Pros

• Two bases and two mattresses included
• Wireless remote
• 750 lb static load capacity

Cons

• No trial period; opened mattresses cannot be returned
• A bundle includes more than mattresses alone

EGOHOME includes two adjustable bases and two 14-inch medium-firm gel memory foam mattresses. That makes it a full split arrangement, with a mattress and base for each side.

The mattresses have a graphene-infused cover. The bases offer 58-degree head elevation and 37-degree leg lift, plus Zero Gravity and Flat presets on a wireless remote.

EGOHOME gives the set a 750-pound static load capacity.

There is no trial period, and opened mattresses cannot be returned. Check the room dimensions and the two-base arrangement before purchase, especially if your existing bed frame or headboard has fixed measurements.

Choose this if you want a paired foam setup and don't already have a base. If you only need mattresses, compare the cost and space needs of the complete bundle with a two-mattress-only option.

6

Vekkia 75” Split King Gap Filler: Best for softening the center gap

9.2/10Our score

• 75 x 10 in foam bridge
• Removable washable cover
• Storage bag included
• Works when adjustable beds are aligned

A foam bed bridge sits between two mattresses to soften the center gap. On adjustable beds, Vekkia says it works only when the beds are in the same or a similar position.

See it on Amazon

Pros

• Removable cover
• Storage bag included
• Made for gaps between paired mattresses

Cons

• Not a mattress
• May shift when the bases are in different positions

Vekkia's foam gap filler is a 75-inch-long, 10-inch-wide bridge for the space between two mattresses. It can make a split king feel more connected across the center, though it is an accessory rather than a mattress.

The bridge has a removable cover with a zipper and comes with a storage bag and installation manual. Vekkia recommends a mattress pad or fitted sheet over the connector for extra stability.

On adjustable beds, Vekkia says the bridge works only when both beds are in the same or similar position. If you and your partner frequently choose different angles, the connector may not stay in place.

Choose it if you want to soften the center gap and usually keep both sides aligned. It isn't a substitute for matching mattress heights or a fitted split king sheet set.

7

Nectar 12” Memory Foam Mattress: Best for a firmer shared king

8.7/10Our score

• 12 in memory foam
• Firm feel
• 80 x 76 in
• 365-night trial

Nectar is a firm, one-piece king mattress with contouring memory foam. It fits a shared king surface, rather than two independently adjustable Twin XL sides.

See it on Amazon

Pros

• Firm feel
• Low motion transfer
• 365-night trial

Cons

• One-piece king format
• Check base compatibility before buying

Nectar's 12-inch firm memory foam king mattress is a one-piece option for a shared surface. It has a breathable cooling fabric, contouring memory foam, and dynamic support foam.

Nectar says the mattress suits different sleep positions and describes the feel as firm with some cradling. The king dimensions are 80 x 76 inches, so it is not a pair of Twin XL mattresses for independent adjustment.

The mattress arrives compressed and is described as ready for sleep within 24 hours. Nectar includes a 365-night trial and a Forever Warranty.

Choose this if you want a firmer, one-piece king mattress. If your setup needs independent left and right movement, select a split configuration instead.

8

Purple Mattress: Best for a split king surface

8.5/10Our score

• Split king size
• 9.25 in thick
• Medium-firm feel
• 2 in GelFlex Grid

Purple offers a split king mattress with a 2-inch GelFlex Grid over comfort foam. Confirm whether the size means two separate mattresses or a single piece before ordering.

See it on Amazon

Pros

• Split king size
• Grid channels allow airflow
• Medium-firm feel

Cons

• Confirm the exact split configuration
• The Grid feel differs from conventional foam

Purple's mattress is offered in split king size and uses a 2-inch GelFlex Grid above comfort foam. The medium-firm feel and grid construction set it apart from conventional memory foam.

Purple says the grid supports pressure points while allowing airflow through its channels. The maker also describes the mattress as responsive as you move, which may appeal if you prefer a surface that feels different from slow-contouring foam.

The product details don't make clear whether this split king option includes two separate mattresses or one piece. Confirm the exact configuration and dimensions before ordering, especially for an adjustable base with independent halves.

Choose it if you want to explore a grid-style mattress in a split king size. If you're weighing a softer feel, this guide to whether a plush mattress is soft explains how feel labels can differ across brands.

9

Celestial Sleep 12 Inch Split King Mattress: Best for a soft split king option

8.0/10Our score

• Split king size
• 12 in gel memory foam
• Medium plush
• CertiPUR-US certified

This 12-inch split king mattress uses gel bead infused memory foam and has a medium-plush feel. It can suit shoppers who want a softer feel in the stated split king size.

See it on Amazon

Pros

• Split king size
• Cooling gel bead infused memory foam
• CertiPUR-US certified

Cons

• Confirm the two-piece configuration before buying
• Medium-plush feel may not suit firmer preferences

Celestial Sleep offers a 12-inch medium-plush split king mattress made with gel bead infused memory foam. Its cooling quilted cover, comfort foam, and base foam form a layered all-foam design.

The mattress is described as usable on day one, with up to 72 hours needed for full expansion. Celestial Sleep says it is made in the USA and uses CertiPUR-US certified materials.

The stated size is split king, but confirm whether the package contains two Twin XL pieces before buying. That detail matters if each side of your adjustable base moves separately.

Choose it if you want a softer foam option in split king sizing. For a hybrid construction, compare best split king hybrid mattresses; shoppers considering a narrower split setup can also read how to choose split queen mattresses for adjustable beds.

How should you choose between Twin XL pairs and one-piece mattresses?

Two Twin XL mattresses are the practical choice when each side of a split king base needs to move independently. A one-piece king mattress can suit a shared, flat surface, but it spans both halves and may limit separate adjustment.

Check the base manual for the mattress size and type it supports. Measure the mattress thickness too, since retainers and bedding need to fit the mattress and base together.

If you and your partner prefer different feels, separate mattresses let you choose independently. Keep their thicknesses close so the surfaces sit at a similar height.

Which mattress feel works best for a split king?

Choose firmness by your own comfort preference, since a split king lets each sleeper select a different feel. Medium-firm options may appeal to people who want a balanced surface, while medium-plush foam can feel softer under pressure points.

Feel labels vary by brand and don't predict how a mattress will feel to every sleeper. If you have ongoing pain or sleep problems, ask a health professional for advice.

How can you reduce the gap between split king mattresses?

A gap is part of the two-mattress setup, but a foam bridge and fitted bedding can make the center feel more continuous. A bridge works best when both adjustable sides are in the same or a similar position.

Measure the gap and check the bridge length before ordering. If the two sides often move to different angles, plan for the connector to shift or leave it off.

What should you check before buying a king split mattress?

Confirm whether the item is one king mattress, two Twin XL mattresses, or a base-and-mattress bundle. Then match the dimensions and mattress thickness to the base, and check trial and return terms.

For a true split king adjustable bed, pick two compatible Twin XL mattresses when independent movement matters. For a shared flat surface, choose a one-piece king mattress by feel and material; if you want hybrid construction, compare the best split king hybrid mattress choices.

Our top 3 picks at a glance

1. 1
   Best for a shared king surface

   MLILY EGOHOME King 14 inch Memory Foam

   9.7/10 our score

   See it on Amazon
2. 2
   Best for pressure-relieving foam

   Novilla Bliss Mattress King Size

   9.6/10 our score

   See it on Amazon
3. 3
   Best for a paired base and mattress set

   Marsail Split King Adjustable Bed Frame

   9.6/10 our score

   See it on Amazon

Frequently asked questions

What is the best split king mattress setup?

A split king setup usually uses two Twin XL mattresses, one on each half of the bed. This lets each sleeper choose a different mattress feel or adjust their side independently.

Confirm the base is split king and that each mattress is Twin XL before ordering.

Can I use one king mattress on a split king base?

A standard king mattress covers both halves, which prevents independent movement if the base sides lift separately. Check the base maker's compatibility guidance before using a one-piece mattress.

For separate movement, choose two Twin XL mattresses made for the base.

Are split king mattresses two Twin XL mattresses?

Many split king arrangements use two Twin XL mattresses placed side by side. Some products use split king wording for a set or configuration, so confirm whether you are getting two pieces and check each mattress's dimensions.

A pair gives each sleeper an independent surface.

How do I keep a gap from forming between split king mattresses?

Push the two mattresses together and use fitted bedding sized for the setup. A foam bed bridge can soften the gap when both adjustable sides are in the same or a similar position.

The bridge may not stay aligned while the bases move to different angles.

Can split king mattresses have different feels?

Yes. With two separate Twin XL mattresses, each sleeper can choose a different firmness or material while keeping the same overall bed size.

Compare thickness as well as feel so the top surfaces sit at similar heights.