Split King Size Mattresses

No other mattress features the Purple GelFlex™ Grid, a layer of flexible gel that’s firm enough to support your frame, but soft enough to reduce tension and pressure. It’s comfort that’s great for your whole body.

Each Mattress Purchase Includes

Flexible Financing Options

As low as 0% APR.

10-Year Warranty

If there's something wrong with your mattress, we'll replace it for up to 10 years, starting from the date of original purchase.  

100-Night Trial

Your 100-night trial begins the day your mattress is delivered to your doorstep. If you decide it isn't a perfect fit for you within the first 100 nights, we'll have it picked up and issue a full refund. (Awesome, right?)

Free Shipping

Get your mattress shipped straight to you at no extra cost – with complimentary white-glove delivery available for select mattresses.

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Purple Essential Collection Split King Size

Our Purple Essential Collection mattresses includes Purple's proprietary GelFlex® Grid for instantly adaptive support + pressure relief. Find perfect solutions to common sleep complaints at our best price. 

On Sale
Best Seller
The Purple Mattress
4.5
(29601)

Split King Purple Mattress®

The instantly adaptive GelFlex® Grid that made Purple famous, with comfort foam for added pressure relief.

Great Better Best
Cooling
Comfort
Support
GelFlex Grid
2 inches
Mattress Height
9.25 Inches
Feel
Medium-Firm
Split Kings starting at Is dollars Is now dollars or as low as
On Sale
Extra Comfort
Purple Plus Mattress
4.5
(29601)

Split King Purple Plus® Mattress

GelFlex® Grid paired with Ultra Comfort Layer + 2X base foam for extra stability and motion isolation. 

Great Better Best
Cooling
Comfort
Support
GelFlex Grid
2 inches
Mattress Height
11 Inches
Feel
Medium
Split Kings starting at Is dollars Is now dollars or as low as

Restore Hybrid Collection Split King Size

Purple's bestselling Restore Hybrid collection has been upgraded. Patented GelFlex® Grid technology combines with all-new comfort layers and responsive coils to deliver the ultimate in cooling comfort, enhanced pressure relief, and instantly adaptive support. Now available in Soft and Firm options.

On Sale
Upgrade to Hybrid
Restore mattress
4.5
(5499)

Split King Purple Restore™ Hybrid Mattress

Upgrade to the enhanced benefits of GelFlex®Grid with hybrid responsive pressure relief and cooling. 

Great Better Best Ultimate
Cooling
Comfort
Support
GelFlex Grid
2 inches
Mattress Height
11.5 Inches
Feel Options
Available in Soft or Firm
Split Kings starting at Is dollars Is now dollars or as low as
On Sale
Most Popular
RestorePlus
4.6
(4830)

Split King Purple RestorePlus™ Hybrid Mattress

Provides core body support plus extra comfort + cooling benefits, for uninterrupted sleep.

Great Better Best Ultimate
Cooling
Comfort
Support
GelFlex Grid
3 inches
Mattress Height
13 Inches
Feel Options
Available in Soft or Firm
Split Kings starting at Is dollars Is now dollars or as low as
On Sale
#1 For Cooling
RestorePremier Mattress
4.4
(2169)

Split King Purple RestorePremier™ Hybrid Mattress

Sleep deeper with best-in-class cooling, superior pressure relief + aligning support for restorative sleep.

Great Better Best Ultimate
Cooling
Comfort
Support
GelFlex Grid
3 inches
Mattress Height
13 Inches
Feel Options
Available in Soft or Firm
Split Kings starting at Is dollars Is now dollars or as low as

Rejuvenate Luxe Collection Split King Size

Indulge in luxurious comfort with a Quilted Euro Top—this hybrid collection combines the benefits of a zoned coil system with high-density GelFlex® Grid Plus for maximum body support and pressure relief. 

On Sale
Innovation Meets Luxury
Purple Rejuvenate Mattress
4.4
(13705)

Split King Purple Rejuvenate™ Mattress

Unlock next-level comfort with the GelFlex® Grid Plus, core body support + a luxurious Quilted Euro Top.

Great Better Best Ultimate
Cooling
Comfort
Support
Mattress Height
15.5 Inches
Feel
Firm
Split Kings starting at Is dollars Is now dollars or as low as
On Sale
Pillowy-Soft Comfort
rejuvenate plus mattress
4.4
(13705)

Split King Purple RejuvenatePlus™ Mattress

Upgrade to pillowy softness and minimize motion transfer with advanced, conforming layers + core body support.

Great Better Best Ultimate
Cooling
Comfort
Support
Mattress Height
16.5 Inches
Feel
Soft
Split Kings starting at Is dollars Is now dollars or as low as
On Sale
Ultimate Bliss
RejuvenatePremier
4.4
(13705)

Split King Purple RejuvenatePremier™ Mattress

The ultimate luxury sleeping experience — top-of-the-line stacked comfort layers + maximum full body support.

Great Better Best Ultimate
Cooling
Comfort
Support
Mattress Height
18.5 Inches
Feel
Medium
Split Kings starting at Is dollars Is now dollars or as low as

Benefits of The Purple GelFlex™ Grid

Cushions and supports

The Grid’s columns give way under focused pressure from hips and shoulders to gently cradle your body, while offering support to broad, evenly distributed weight (lookin’ at you, legs and back).

Dissipates Body Heat

The Grid features 1,400+ ventilation chambers for better airflow. Plus, when it comes to temperature, our GelFlex material is like Switzerland – totally neutral – so you won’t sleep too hot or too cold.

Adapts as you move

The GelFlex Grid instantly shifts as you change your sleeping position. When you move, it moves, so you feel every inch of comfortable support and your sleep remains blissfully uninterrupted.

Is a Split King Size Right For Me?

  • A Split King mattress is the same size as a king-size mattress, although it is split into two twin size mattresses.
  • Not a great option for bedrooms smaller than 12x12 feet. A 12x12 foot bedroom or larger will allow a comfortable amount of space.
  • Ideal for couples with different sleep preferences, in addition, it helps isolate motion transfer.

Mattress Size Guide

Crib: 28" x 52"   Toddler: 28" x 52"    

Twin: 38" x 75"  Twin XL: 38" X 80"   

Full/Double: 54" x 75"  Queen: 60" x 80"  

King: 76" x 80"  California King: 72" x 84"

Mattress Size Guide
mattress size guide

More ways to explore

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Find Purple in thousands of stores across the country and try out our beds in person.

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Our Sleep Geniuses are here to answer questions and help you find your dream mattress.

Frequently Asked Questions

A split king is made of two separate twin XL mattresses. If the mattresses or split bed frame isn’t secure, the two beds can start to drift apart.

The best way to keep your mattresses together is to use a bed frame that fits your split king mattress. If you have a Purple mattress, we highly recommend using Purple’s split king adjustable bed base, the Purple Premium Smart Base. This adjustable bed base was made specifically for Purple mattresses, including the Purple split king adjustable bed. So, you’re guaranteed to get the very best fit with no slips or gaps in your split king mattress.

If you’re not ready to buy a new adjustable frame, there are some other ways to keep your split king mattress together.

First, you should check if your bed frame is sliding. What’s probably happening is that your split bed frames are moving apart and creating a gap in your bed. If you bought a split king bed frame, it should include a connector (like a metal bar) that holds the two frames together. Make sure that this bar is securely in place.

If you bought two twin xl bed frames instead of a split king bed frame, you may not have a connector. Instead, you can try to secure the legs of your bed frames by putting non-slip material (like rubber pads) under each leg.

Another possibility is that your mattresses are moving on the bed frame. To prevent this, you can put a non-slip mattress pad between the mattress and the bed frame. Make sure to cut it in half or it will prevent your bed from adjusting.

If you don’t want to use a pad, you can use some heavy-duty, non-slip tape to secure the mattresses to the frame. This type of tape is usually used to secure rugs to slippery floors. Ask around your local home improvement store to find some.

You can use a king size comforter or two twin XL comforters on your adjustable bed. It depends on your preferences (and those of your partner).

Using one king comforter will give your bed a more uniform look. It will also allow you and your partner to share the same blanket space.

When using separate twin XL bedding, both partners will be able to choose a duvet that fits their needs. For example, one sleeper might like a lighter comforter and the other might want a warm, heavy one.

A split bed requires different bedding than a standard king. For your adjustable mattress, you’ll need to buy two twin XL fitted sheets.

DO NOT use a standard king fitted sheet with a split king mattress. Although a king fitted sheet will fit a split king mattress, it will prevent your bed from moving with the adjustable frame. This could damage your adjustable bed frame.

For your split king sheets, you can opt for one large king size flat sheet or two twin xl sheets. Both will fit your mattress, so your choice depends on your and your partner’s sleep styles.

If you and your partner have the same preferences for bedding, a single flat sheet will do just fine. Plus, it will make it easier to snuggle. If one partner likes breathable bamboo and the other prefers fancy satin sheets, you can grab two different sets of twin xl sheets and enjoy the best of both worlds.

If you’re worried about accidentally buying the wrong sheets for your split mattress, you can shop Purple.com for split king sheet sets to make life easier.

You need to buy two twin XL mattresses to fit a split king adjustable bed. This is because the size of one twin xl mattress is exactly half that of a standard king mattress.

Let’s take a look at the twin xl bed dimensions and king bed dimensions: 

Twin XL mattress: 38 X 80 inches
King mattress: 76 X 80 inches

Two separate twin XL mattresses will allow you to enjoy the full range of motion and all of the capabilities of your adjustable split king base. A standard king mattress, queen mattress, full mattress, or California king mattress (Cal king) is not compatible with an adjustable split king base. 

If you attempt to use any other mattress type on a split king base, you risk damage to the base and the mattress, and you will likely void any warranties covering your products. 

It’s also important to remember to select two twin XL mattresses for your base, and NOT two twin mattresses. The XL mattress is five inches longer than the standard twin, so two twin mattresses will not fit an adjustable frame for a split king. 

To make shopping easier, Purple gives you the option to select the “split king” mattress size directly when choosing a mattress. This will ensure that both mattresses ship to your door for free and at the same time. Both mattresses will also be covered by Purple’s 10-year warranty and 100-night risk-free sleep trial. 

Is a split king mattress the right choice for you? If you fit into one of the following categories, then the answer might be yes. 

You want to use a split king adjustable bed frame: If you have or wish to have a split adjustable bed frame, you’ll need a split mattress to use it. 

You and your partner have different sleep preferences: If you and your partner can’t agree on what makes for a good night’s sleep, then you can have the best of both worlds with a split king bed. It’s the only way to sleep on separate mattresses while sharing a bed. 

You want a mattress with more motion isolation: If you’re a light sleeper who wakes up to the slightest movement from your partner, a split king will eliminate virtually all motion transfer. This is especially true if you choose a split mattress that already has low motion transfer, like a memory foam mattress or a Purple Mattress™.

You want a luxurious sleep experience: Adjustable beds provide comfort and versatility that you can’t get from a standard mattress and bed frame. With an adjustable bed, you can control your comfort with the click of a button. The best adjustable beds, such as the Purple PowerBase™, even come with premium presets and blissful massage settings.

Yes. In fact, a split king mattress is one of the most comfortable and luxurious mattresses you can buy. This is because adjustable mattresses give you far more control over your comfort than standard mattresses. 

A split king bed with an adjustable base will support your back when you want to sit up and allow you to kick back and elevate your legs without stacking pillows. Regardless of your sleep position, you’ll be able to adjust your mattress to support your breathing, spinal health, and posture. You and your partner will finally be able to sleep in your ideal comfort zones. 

Modern adjustable beds, like the Purple PowerBase™, offer additional features for an out-of-this-world sleep experience. These include:

  • Preset positions like the zero-gravity position 
  • Saved positions (so you can find your favorite adjustments again)
  • 5 massage settings for full-body bliss
  • Under-bed lighting 
  • Built-in USB ports for charging your devices

If you and your partner are interested in upgrading your sleep experience, a split king mattress is a great choice.