Core Support Twin Xl Mattresses

Core Support Twin Xl Mattresses offer a range of sleep solutions for bedrooms, guest spaces and more. Explore available sizes, styles and price points to find a mattress that fits your space and sleep preferences.

Sort & Filter

Sleepy's By Sealy Memory Foam Medium Mattress

3474

Starting at

$449⁹⁹

$749⁹⁹

$300 OFF

Medium Comfort, best for

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

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

Serta Perfect Sleeper Charlotte 2.0 Medium Euro Top Mattress

2615

Starting at

$629⁹⁹

$1099⁹⁹

$470 OFF

Medium Comfort, best for

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

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest PressureSmart 2.0 Plush Pillow Top 13.75" Mattress

2695

Starting at

$799⁹⁹

$1599⁹⁹

$800 OFF

Plush Comfort, best for

Side Sleepers
Temperature
Bed Partner
Pain
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

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

Serta Perfect Sleeper Sleep Excellence Medium PillowTop Mattress

1433

Starting at

$1399⁹⁹

Medium Comfort, best for

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

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 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

Beautyrest Silver BRS900 11.75" Extra Firm Mattress

3296

Starting at

$489⁹⁹

$1199⁹⁹

$710 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

$449⁹⁹

$899⁹⁹

$450 OFF

Firm Comfort, best for

Back, Stomach Sleepers
Toss and Turn
Pain
Bed Partner
Temperature

FREE ADJUSTABLE BASE ³ with code ELEVATE

Stearns & Foster Estate 14.5" Firm Mattress

1809

Starting at

$2099⁰⁰

$2399⁰⁰

$300 OFF

Firm Comfort, best for

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

Receive $300 Instant Gift⁴ with purchase.

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

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

Beautyrest Silver BRS900-C 13.75" Extra Firm Mattress

1810

Starting at

$599⁹⁹

$1399⁹⁹

$800 OFF

Extra Firm Comfort, best for

Back, Stomach Sleepers
Temperature
Pain
Bed Partner
Toss and Turn

FREE ADJUSTABLE BASE ³ with 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

Stearns & Foster Lux Estate Elite 16" Medium Euro Pillow Top Mattress

981

Starting at

$3399⁰⁰

$3999⁰⁰

$600 OFF

Medium Comfort, best for

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

Receive $300 Instant Gift⁴ with purchase.

Sleepy's By Sealy Slumber Medium Mattress

175

Starting at

$469⁹⁹

$1529⁹⁹

$1060 OFF

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 12" Medium Euro Top Mattress

603

Starting at

$489⁹⁹

$879⁹⁹

$390 OFF

Medium Comfort, best for

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

Serta Perfect Sleeper Nurture Night 12" Firm Mattress

1186

Starting at

$579⁰⁰

$649⁰⁰

$70 OFF

Firm Comfort, best for

Back, Stomach Sleepers
Pain
Bed Partner
Temperature
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

A core support Twin XL mattress is designed to promote a stable, balanced sleep surface while providing the comfort needed for restorative zzz's. Measuring 38 inches wide by 80 inches long, a Twin XL mattress offers five additional inches of length compared with a standard twin, making it a popular choice for taller sleepers, college dorm rooms, guest bedrooms and compact spaces. Supportive comfort layers help cushion pressure points around the shoulders and hips, while a durable support core helps maintain consistent alignment from head to toe. Explore Twin XL mattresses with innerspring, memory foam and hybrid constructions to find the feel that matches your sleep style, whether you prefer responsive support, contouring comfort or a balanced combination of both. Choosing the right core support Twin XL mattress can make a meaningful difference in comfort, posture and overall sleep quality. Look for features such as reinforced edges, individually wrapped coils, high-density foam or a responsive base layer to help create dependable support and reduce motion transfer across the mattress. Side sleepers may appreciate pressure-relieving memory foam, while back and stomach sleepers often prefer a firmer Twin XL mattress with a more supportive feel. Mattress Firm makes it easy to compare Twin XL mattress types, comfort levels and trusted brands so you can find a supportive mattress that fits your room, bed frame and budget. Pair your new mattress with Twin XL sheets, a compatible foundation and a comfortable pillow to create a complete sleep setup that helps you sleep well so you can live well.

What is a core support mattress? + -

A core support mattress is designed with a foundational support system, such as individually wrapped coils, open coils or high-density foam. Additional comfort layers may include memory foam, latex or quilted upholstery.

What materials are used in core support mattresses? + -

Common materials include steel coils, high-density polyfoam, memory foam, latex and fabric upholstery. The exact construction varies by mattress model.

How do I choose the right firmness for a core support mattress? + -

Consider your preferred feel, usual sleep position and the surface you find most comfortable. A plush mattress has more cushioning, while a firm mattress has a flatter, more solid feel.

Can a core support mattress include memory foam? + -

Yes. Many core support mattresses combine a foundational coil or foam system with memory foam comfort layers. This construction pairs the feel of memory foam with a structured mattress core.

How should I care for a core support mattress? + -

Use a compatible foundation, rotate the mattress according to the manufacturer's instructions and protect the surface with a mattress protector. Always follow the care guidelines provided with your mattress.