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.
Shop NowTwin Size Mattresses
Twin size mattresses are the smallest, and coziest, mattress size on the market, but we still manage to pack a lot of high-quality comfort and support into this 38” x 75” sleep space. Twin size mattresses tend to be more affordable due to their smaller size, but they can be a practical option for most sleep needs.
How big is a twin size mattress?
Not to be mistaken for twin XL mattresses, standard twin size mattresses are 38 inches wide by 75 inches long. Twin XL mattresses measure 5 inches longer at 80 inches in length.
Who Should Sleep On A Twin Size Bed?
Ideal for individuals who do not require much sleeping space, twin beds are just the right size for growing children, teens & bunk beds.
As the smallest mattress size, twin mattresses are perfect for smaller rooms or rooms with odd configurations.
Twin mattresses are one of the most affordable sizes on the market, making them practical for high-quality, lower-budget bedroom upgrades.
120-night free trial
Try your twin size 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.
Safe, supportive memory foam
All of the memory foam we develop for our twin 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.
Buying a Foundation for a Twin Size Bed
Create a more supportive sleeping experience by pairing your twin size mattress with a twin 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 two options compatible with a twin mattress: a slatted foundation and a platform foundation.
Clever Connect Foundation®
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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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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More than 200,000 happy sleepers (and counting).
Which Twin Size BedInABox® is right for you?
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.
Shop NowThe 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.
Shop Now11" of our classic CoolRest™ Gel memory foam construction, enhanced with spring support for added lift.
Shop NowThe Tranquillium® mattress is built with 12” and three layers of firm memory foam to maximize support without sacrificing comfort.
Shop NowThe 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.
Shop NowFind your twin size mattress
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Find your twin size mattress
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Cozy Season Sale Items
1, 8” Clever Connect Foundation with legs.
1 MotionInABox™ Adjustable Base.
Frequently Asked Questions
What is the standard size of a twin bed mattress?
What is the difference between a twin and a twin XL?
Can an adult sleep in a twin bed?
How many BedInABox® mattresses come in the twin size?
What size room do you need to for a twin mattress?
HOW BIG IS A TWIN SIZE MATTRESS?
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WHAT IS THE DIFFERENCE BETWEEN A TWIN AND A FULL SIZE MATTRESS?
If you are deciding between a twin size mattress and a full size mattress for your next mattress in a box upgrade, it is important to understand [...]