Twin XL Mattresses for Split King Beds

Twin XL Mattresses for Split King Beds offer a practical way to create a split king sleep setup with two separate mattresses. Explore Twin XL sizes from Mattress Firm to find options that fit your bed frame, sleep preferences and budget, then complete your setup with the bedding and accessories you need for comfortable zzz's.

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Sleepy's By Sealy Medium Euro Top Mattress

4439

Starting at

$209⁹⁹

$419⁹⁹

$210 OFF

Medium Comfort, best for

Back, Side, Stomach Sleepers
Bed Partner
Pain
Temperature
Toss and Turn

Sleepy's Rest Firm 2.0 Innerspring Mattress

7001

Starting at

$449⁹⁹

Firm Comfort, best for

Back, Stomach Sleepers
Pain
Bed Partner
Temperature
Toss and Turn

Beautyrest BR800 13.5" Plush Pillow Top Mattress

2784

Starting at

$549⁹⁹

$1179⁹⁹

$630 OFF

Plush Comfort, best for

Side Sleepers
Toss and Turn
Pain
Bed Partner
Temperature

FREE ADJUSTABLE BASE ³ with code ELEVATE

Serta Perfect Sleeper Nurture Night 14.5" Pillow Top Mattress

1130

Starting at

$679⁰⁰

$849⁰⁰

$170 OFF

Plush Comfort, best for

Side Sleepers
Pain
Temperature
Bed Partner
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

Serta Perfect Sleeper Oasis Sleep 12" Extra Firm Mattress

905

Starting at

$769⁰⁰

$949⁰⁰

$180 OFF

Extra Firm Comfort, best for

Back, Stomach Sleepers
Pain
Temperature
Bed Partner
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest Silver BRS900-C 13.75" Extra Firm Mattress

1810

Starting at

$669⁹⁹

$1559⁹⁹

$890 OFF

Extra Firm Comfort, best for

Back, Stomach Sleepers
Temperature
Pain
Bed Partner
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest Black Series One 14.75" Medium Pillow Top Mattress

332

Starting at

$1949⁰⁰

$2349⁰⁰

$400 OFF

Medium Comfort, best for

Back, Side, Stomach Sleepers
Pain
Temperature
Allergies
Bed Partner
Toss and Turn

$300 ⁶ adjustable base instant gift with purchase.

Beautyrest Greenwood 10.5" Firm Mattress

3368

Starting at

$339⁷⁷

$849⁹⁹

$510 OFF

Firm Comfort, best for

Back, Stomach Sleepers
Pain
Toss and Turn
Temperature
Bed Partner

Beautyrest PressureSmart 2.0 Firm 11" Mattress

Starting at

$674⁹⁹

$1349⁹⁹

$675 OFF

Firm Comfort, best for

Back, Stomach Sleepers
Temperature
Bed Partner
Pain
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest PressureSmart 2.0 Plush 11.75" Mattress

6251

Starting at

$724⁹⁹

$1449⁹⁹

$725 OFF

Plush Comfort, best for

Side Sleepers
Temperature
Bed Partner
Pain
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

Sleepy's By Sealy Memory Foam Plush Mattress

2776

Starting at

$529⁹⁹

$829⁹⁹

$300 OFF

Plush Comfort, best for

Side Sleepers
Pain
Bed Partner
Toss and Turn
Temperature

FREE ADJUSTABLE BASE ³ with code ELEVATE

Tempur-Pedic TEMPUR-Adapt 11" Medium Previous Generation Mattress

3631

Starting at

$1189⁷⁷

$1699⁰⁰

$509 OFF

Medium Comfort, best for

Back, Side, Stomach Sleepers
Pain
Temperature
Allergies
Bed Partner
Toss and Turn

Beautyrest PressureSmart 2.0 Hybrid Medium 13" Mattress

1758

Starting at

$874⁹⁹

$1749⁹⁹

$875 OFF

Medium Comfort, best for

Back, Side, Stomach Sleepers
Pain
Bed Partner
Temperature
Allergies
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest Silver BRS900 11.75" Extra Firm Mattress

3296

Starting at

$569⁹⁹

$1359⁹⁹

$790 OFF

Extra Firm Comfort, best for

Back, Stomach Sleepers
Temperature
Pain
Allergies
Bed Partner
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest BR800 11.25" Firm Mattress

2233

Starting at

$469⁹⁹

$959⁹⁹

$490 OFF

Firm Comfort, best for

Back, Stomach Sleepers
Toss and Turn
Pain
Bed Partner
Temperature

FREE ADJUSTABLE BASE ³ with code ELEVATE

Serta Perfect Sleeper Sleep Excellence Plush Mattress

733

Starting at

$549⁷⁷

$1099⁹⁹

$550 OFF

Plush Comfort, best for

Side Sleepers
Pain
Toss and Turn
Temperature
Bed Partner

FREE ADJUSTABLE BASE ³ with code ELEVATE

Tulo Bamboo 10" Medium Green Tea Memory Foam Mattress

5555

Starting at

$249⁹⁹

$589⁹⁹

$340 OFF

Medium Comfort, best for

Back, Side, Stomach Sleepers
Pain
Bed Partner
Temperature
Allergies
Toss and Turn

Tulo Bamboo 12" Medium Plush Green Tea Memory Foam Mattress

5555

Starting at

$279⁹⁹

$659⁹⁹

$380 OFF

Medium Comfort, best for

Back, Side, Stomach Sleepers
Bed Partner
Pain
Temperature
Toss and Turn

Beautyrest BR800 13.5" Medium Pillow Top Mattress

1863

Starting at

$549⁹⁹

$1179⁹⁹

$630 OFF

Medium Comfort, best for

Back, Side, Stomach Sleepers
Toss and Turn
Pain
Bed Partner
Temperature

FREE ADJUSTABLE BASE ³ with code ELEVATE

Sleepy's Elite Adjustable Base

1129

Starting at

$1199⁹⁹

Save $299 with qualifying mattress purchase. Code: ELEVATE

Tulo Bamboo 8" Medium Green Tea Memory Foam Mattress

5555

Starting at

$219⁹⁹

$529⁹⁹

$310 OFF

Medium Comfort, best for

Back, Side, Stomach Sleepers
Pain
Bed Partner
Temperature
Toss and Turn

Beautyrest Silver BRS900 11.75" Medium Firm Mattress

1745

Starting at

$669⁹⁹

$799⁹⁹

$130 OFF

Medium Comfort, best for

Back, Side, Stomach Sleepers
Allergies
Bed Partner
Temperature
Pain
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

Purple Original Mattress

59743

Starting at

$1040⁰⁰

$1299⁰⁰

$259 OFF

Medium Comfort, best for

Back, Side, Stomach Sleepers
Temperature
Pain
Bed Partner
Toss and Turn
Allergies

Sleepy's By Sealy Slumber Cushion Firm Mattress

301

Starting at

$1379⁹⁹

Medium Comfort, best for

Back, Side, Stomach Sleepers
Bed Partner
Toss and Turn
Pain
Temperature

FREE ADJUSTABLE BASE ³ with code ELEVATE

Sealy Essentials Winter Green 13" Plush Euro Pillow Top Mattress

548

Starting at

$614⁹⁹

$1129⁹⁹

$515 OFF

Plush Comfort, best for

Side Sleepers
Bed Partner
Pain
Temperature
Toss and Turn
Allergies

Beautyrest BR800 12" Plush Euro Top Mattress

735

Starting at

$429⁹⁹

$1099⁹⁹

$670 OFF

Plush Comfort, best for

Side Sleepers
Toss and Turn
Pain
Bed Partner
Temperature

A split king bed uses two separate Twin XL mattresses placed side by side to create the same overall size as a standard king mattress. Each Twin XL mattress measures approximately 38 inches wide by 80 inches long, giving couples a spacious 76-inch-wide sleep surface while allowing each person to choose their preferred comfort level. Twin XL mattresses for split king beds are especially useful for partners with different sleep preferences, since one side can feature a firm mattress for back and stomach sleeping while the other offers a softer feel for side sleeping. This split design also makes it easier to move, rotate and replace individual mattresses without purchasing an entirely new king mattress. The best Twin XL mattress for a split king setup depends on your sleep style, body type, comfort preference and bed base. Many Twin XL mattresses are compatible with split king adjustable bases, allowing each side of the bed to raise or lower independently for customized support while reading, relaxing or sleeping. Be sure to select two matching Twin XL mattresses if you want a uniform surface, or combine compatible models for personalized comfort on each side. Twin XL sheets and split king bedding are also designed to fit this configuration, helping keep both mattresses neatly covered while preserving independent movement. Look for a mattress with strong edge support, pressure-relieving comfort and dependable durability to create a comfortable split king bed that supports better zzz's night after night.

What mattress materials are available for a Twin XL split king setup? + -

Twin XL mattresses for split king beds are available in memory foam, hybrid and innerspring designs. Each construction offers a different feel, so consider whether you prefer contouring comfort, responsive support or a combination of both.

Can I choose different comfort feels for each side of a split king bed? + -

Yes. A split king setup can include two Twin XL mattresses with different comfort feels, allowing each sleeper to choose a mattress that matches their personal preferences.

What firmness should I choose for a Twin XL mattress? + -

Firmness is a matter of personal preference. Think about how you like your mattress to feel, whether you prefer a more cushioned or supportive surface and which sleep position you use most often.

Can Twin XL mattresses be used with an adjustable base? + -

Yes. Many Twin XL mattresses are designed to pair with adjustable bases. Check the mattress and base specifications to confirm compatibility before creating your split king setup.

How do I keep two Twin XL mattresses together on a split king bed? + -

Use a compatible split king bed frame or adjustable base designed to hold two Twin XL mattresses. A split king bedding set can also help create a coordinated look across both sides of the bed.