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Twin XL Mattresses

Similar to a twin mattress in terms of size, the twin XL mattress also measures 38 inches in width, but features an additional 5 inches of length, making it 80 inches long. This extra length makes twin XL beds a great option for anyone who wants the convenience and practicality of a standard twin size mattress, with a little bit more leg room.

Essential Product Image
Essential
9” multilayer foam construction built with our CoolRest® Gel memory foam for any sleeper who wants simple, long-lasting support.
Firmness: Medium-firm
Twin XL $649
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Original Product Image
Original
11” multilayer foam construction designed with CoolRest® Gel memory foam to bring you cool, comfortable memory foam support.
Firmness: Medium-firm
Twin XL $599.25 $799
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Azul® Product Image
Azul®
11” medium-soft multilayer foam construction with an UltraCool® soft knit cover and our most advanced cooling system to keep you sleeping comfortably.
Firmness: Medium-soft
Twin XL $749.25 $999
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Original Hybrid Product Image
Original Hybrid
11" of our classic CoolRest® Gel memory foam construction, enhanced with spring support for added lift.
Firmness: Medium-firm
Twin XL $749.25 $999
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Tranquillium® Product Image
Tranquillium®
12” and three layers of memory foam support infused with CoolRest® technology for those seeking maximum support and comfort.
Firmness: Firm
Twin XL $824.25 $1,099
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BedInABox® Dual Hybrid® Product Image
BedInABox® Dual Hybrid®
13” of premium foam and spring support with the highest coil count in the industry. Advanced pressure relief exactly where you need it.
Firmness: Medium-firm
Twin XL $974.25 $1,299
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Eco-Lux® Product Image
Eco-Lux®
11" of plush memory foam made with renewable materials. Features a breathable, moisture wicking organic cotton cover.
Firmness: Medium-firm
Twin XL $974.25 $1,299
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How big is a twin XL mattress?

A Twin XL mattress is 38 inches wide by 80 inches long. You can combine two twin XL mattresses on a standard king size bed frame to create a king size bed.

Mattress Size Chart

Who Should Sleep On A Twin XL Bed?

Kids & Teens Kids & Teens

The compact size is great for growing kids or single individuals who need the 80 inches of bed length.

Small Bedrooms Small Bedrooms

Because of their narrow width, twin XL mattresses are best for smaller rooms; especially kids rooms or college dorms.

Low Budget Upgrades Budget conscious

The second smallest standard mattress size, use the twin XL for high quality comfort at a great value.

120-night free trial

Try your twin XL mattress in a box risk-free for 120 nights. If you don't love your new BedInABox® after sleeping on it for 60 nights, let us know and we will get the return process started. Details can be found in our Return Policy.

120-night free trial
safe, supportive memory foam

Certified safe support

All of the memory foam we develop for our twin XL memory foam mattresses is CertiPUR-US® certified. This means that the foam has been tested by accredited labs and has been certified as safe to sleep on. We use multiple layers of our house-made memory foam to provide the perfect balance of support and pressure relief, for all sleepers.

Sleep now, pay later

We partner with Affirm to offer flexible financing options, so you can pay with fixed monthly payments with rates between 0-30% APR. Simply select Affirm at checkout and complete an application that won’t affect your credit score. Prequalify Now.

sleep now, pay later

Buying a Foundation for a Twin XL Size Bed

Create a more supportive sleeping experience by pairing your twin XL size mattress with a twin XL size foundation. A mattress foundation serves as a base for your mattress and generally uses solid planks or slats to support and lift your mattress off the ground. There are different types of foundations suited to different mattresses and sleep preferences, BedInABox® currently offering three options compatible with a twin XL mattress: a slatted foundation, a platform foundation and an adjustable foundation.

Clever Connect™

Provides simple, slatted support for memory foam or hybrid mattresses. This sturdy foundation is available in a 5” profile or an 8” profile and can be paired with optional foundation legs for additional height.


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Clever Connect™
Platform BedInABox®

Platform BedInABox®

Best described as a combination of a standard mattress foundation and a decorative bed frame, our upholstered platform offers a slightly lower profile than pairing a solid foundation with a separate bed frame and is compatible with all BedInABox® mattresses.


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MotionInABox™ Adjustable Beds

Solid mattress bases that can be raised or lowered to create a custom sleep experience. The MotionInABox™ adjustable bases are available in two different models, MotionInABox™ 1.0 and MotionInABox™ 2.0, that offer two different suites of features.


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MotionInABox™ Adjustable Beds
 

Which Twin XL Size BedInABox® is right for you?

Essential Product Image
Essential

Our 9” Essential mattress is a simpler take on our Original Mattress, utilizing the same dual layer memory foam technology in a slightly thinner, medium-firm mattress profile.

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Original Product Image
Original

The Original mattress is our classic 11” dual-layer memory foam mattress. The two layers combine plush, temperature regulating comfort and medium-firm support to provide the perfect level of contouring alignment.

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Azul® Product Image
Azul®

The Azul® mattress features 11” of cooling comfort. The dual layer medium-soft mattress tops multiple layers of phase change material with an UltraCool® soft knit cover to offer our most advanced cooling system.

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Original Hybrid Product Image
Original Hybrid

11" of our classic CoolRest® Gel memory foam construction, enhanced with spring support for added lift.

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Tranquillium® Product Image
Tranquillium®

The Tranquillium® mattress is built with 12” and three layers of firm memory foam to maximize support without sacrificing comfort.

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BedInABox® Dual Hybrid® Product Image
BedInABox® Dual Hybrid®

The Dual Hybrid® mattress is 13” of premium comfort, combining the support of memory foam and springs. The BedInABox® hybrid mattress features the highest coil count in the industry to provide ultimate lift, support and pressure relief exactly where you need it.

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Eco-Lux® Product Image
Eco-Lux®

The Eco-Lux mattress is made with 11" of renewable memory foam, topped with a naturally moisture wicking organic cotton cover. The only Bio-Preferred® mattress on the market and our most sustainable sleep solution.

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Find your twin XL size mattress


Made in the USA with the most premium foams and materials, all of our Twin XL mattresses are backed by a 20-year limited warranty so you can rest easy, night after night.


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Find your twin XL size mattress


Made in the USA with the most premium foams and materials, all of our Twin XL mattresses are backed by a 20-year limited warranty so you can rest easy, night after night.


Shop Mattresses

Frequently Asked Questions

What is the standard size of a twin XL mattress?

What is the difference between a twin and a twin XL?

Twin and twin XL mattresses are comparable in size, with the twin XL size measuring just 5 inches longer. The twin XL comes in at 38 x 80 inches, giving you those 5 additional inches of length. Both size are still great options for children, single individuals and smaller sleeping spaces.

Can an adult sleep on a twin XL bed?

Yes, an adult can comfortably sleep on a twin XL bed. As a matter of fact, a twin XL mattress is the most common mattress size found in college dorm rooms. The length of a twin XL bed can accommodate individuals up to 6’6” in height! However, if you are someone who requires substantial length and width of your sleep, a full size or queen size mattress may be your next best option.

How many BedInABox® mattresses come in the Twin XL size?

All six BedInABox® mattresses are available in the twin XL size.

Can any room fit a twin XL mattress?

The compact size of a twin XL mattress makes it a very practical bed size for most room configurations. It is recommended that your room have around 120 square feet of living space, or measure 10 feet by 12 feet, to comfortably fit a twin XL bed along with other bedroom furniture.
The History of the Twin XL Mattress

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WHAT IS THE DIFFERENCE BETWEEN A TWIN AND A FULL SIZE MATTRESS?

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Find your perfect mattress in a box

Compare the industry-leading quality, comfort & support of BedInABox® memory foam mattresses to some of our biggest competitors in the sleep business.

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