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Twin Mattresses

Shop award-winning twin size foam mattresses for great sleep, at an even greater price.

The One

Foam Mattress

30% OFF

Better sleep starts with One.
Price: $1,245 Sale Price: $870


Hybrid Mattress

30% OFF

Dreamy ergonomic comfort.
Price: $1,875 Sale Price: $1,305

Included with every Casper mattress

Free shipping and returns*
Free shipping and returns*
100-night risk free mattress trial
100-night risk free mattress trial
10 Year Limited Mattress Warranty*

10 Year Limited Mattress Warranty*

Quick, simple financing options

Quick, simple financing options

Compatible with most bed frames
Compatible with most bed frames

* Select products ineligible for free shipping or returns where indicated. Additional shipping fees apply to AK and HI.

Mattress Size Chart
Twin: 38 inches by 75 inches; Twin XL: 38 inches by 80 inches; Full: 53 inches by75 inches; Queen: 60 inches by 80 inches; King: 76 inches by 80 inches; California King: 72 inches by 84 inches

How big is a twin size mattress?

A twin size mattress is 75 inches long and 38 inches wide, while a twin xl mattress is 80 inches long and 38 inches wide

Mattress sizing chart

Twin Mattress - 38" x 75" : Often found in kid's rooms and studio apartments.

Twin XL Mattress - 38" x 80": Often found in college dorm rooms and studio apartments

Full Mattress - 53" x 75": Often found in guest rooms.

Queen Mattress - 60" x 80": Often found in master bedrooms.

King Mattress - 76" x 80": Often found in extra large master bedrooms.

California King Mattress - 72" x 84": Often found in extra large master bedrooms, perfect for gathering the family.

The Casper Twin isn't actually made of clouds. We promise.

Twin mattresses are one of the world’s most popular mattress sizes. They’re just right for kids and teenagers and make amazing daybeds. The Casper twin is our smallest mattress, but it delivers the same cloud-like sleep as its larger cousins.

Award-winning design for years of sleepy bliss

Our twin size mattress is built from premium foams and fabrics, and is certified safe for you and the environment. And like every Casper mattress, it’s protected by an outstanding 10-year limited warranty¹. That’s a lot of naps.

Unbeatable 100-night free trial

Returns are always free with Casper. And if you don’t love your new twin size mattress, just let us know within 100 days. We’ll pick it up and give you a full refund anytime after the 30-Night Adjustment Period.

Contouring memory foam with 'just right' support

We use multiple layers of high-tech memory foam to gently hug your body while cradling your weight, relieving pressure and stress. If you’ve never slept on a cloud before, you’re in for a treat.

Twin Size Hybrid Mattresses

Step into the world of uncompromising relaxation with our twin size hybrid mattress. Marrying the responsive bounce of pocketed coils with the enveloping embrace of memory foam, our twin mattress is designed to adapt to your every twist and turn. Our thoughtfully constructed design emphasizes unhindered airflow, ensuring you remain refreshed as you drift into a world of dreams. Scroll down to find a perfect blend of comfort, support, and breathability, custom-made to redefine your sleep experience.

Our best selling Hybrid Mattress is available in Twin Size.

Our hybrid mattress collection combines the pressure relief of our original foam mattress with the added lift from resilient springs.

Dream Hybrid
Original Hybrid Mattress

Dream Hybrid

Combines the best of both worlds with resilient springs as the base for added lift and our proprietary foam for pressure relief. The "just right" feel is now even better.

Twin Size Memory Foam Mattresses

Discover restful tranquility with our twin size memory foam mattresses. Skillfully crafted using state-of-the-art memory foam solutions, each mattress acts as a gateway to a realm where the contours of your body are gently supported, aligning your spine and alleviating the strains of the day. Our memory foam options present an ambient sleep atmosphere, achieving a harmonious mix of softness and cool air circulation. Browse further to find a sanctuary of sleep that resonates with your individual comfort preferences.

Which Casper Twin Memory Foam Mattress is right for you?

Whether you’re looking for luxurious extra thickness or a more streamlined sleeping experience, there’s a Casper twin size mattress type for you. Here are two options to choose from in our twin memory foam mattress collection:

The Original


The One was engineered using feedback and data from customers like you. If sleeping on a cloud sounds good, consider this your sweet spot.

Memory Foam vs. Hybrid Twin Size Mattresses

Twin size memory foam mattresses are renowned for their unmatched contouring abilities and reduced motion transfer, making sure every user feels snug and supported all night long. They provide a tailored sleep atmosphere by adjusting impeccably to your frame, enhancing pressure alleviation.

On the other hand, hybrid mattresses set a new standard by integrating the unparalleled comfort of memory foam with the dynamic support of springs. This fusion manifests in a mattress that not only delivers the softness of memory foam but also promotes increased airflow, excellent edge durability, and a touch of buoyancy.

Intrigued about the specifics? Dive deeper with our detailed memory foam vs. hybrid mattresses guide.

Frequently Asked

Standard twin bed mattress dimensions measure 38 inches wide and 75 inches long. The compact size of this single bed makes it an easy pick for children’s bedrooms, college dorm rooms, and other tight spaces.

Typically, twin mattress prices range from $300 to $1,400. The price depends on the quality and added features—materials, layering, cooling technology, and waterproofing all add up to a higher dollar amount. The mattress type can also affect the cost– whether it's a memory foam mattress, hybrid mattress, and so on.

The most important thing when looking at prices is to find the highest quality for that price point. Casper’s affordable Element twin mattress provides simple yet pleasing comfort, while the Wave Hybrid twin mattress adds memory foam and cooling gel layers for luxurious rest and the best support. Your twin bed in a box will quickly make for a stylish, sturdy, and space-saving bedtime experience.

twin XL mattress is a comparable bed to a twin mattress but the main difference is that a twin XL has an added 5 inches of length and therefore measures 38 x 80 inches altogether. You’ll also find this type of twin size mattress in college dorms, as well as some apartment and condominium bedrooms.

Learn more in our guide on Twin vs Twin XL.

By standard measurements, a full-size mattress, or double bed, is 53 inches wide and 75 inches long. This means that compared to a standard twin size bed —35 x 75 inches—a full mattress adds 15 inches of width to your sleeping space but no extra length.

For a single sleeper, a full bed’s extra wiggle room might provide a comfier rest or better fill out a larger bedroom. However, both sizes work for a solo sleeper.

Learn more in our guide on Full vs Twin.

A twin bed may feel too cramped for an adult to sleep comfortably in, therefore a different mattress size, like a twin xl or full may be better. However, it all depends on your sleeping needs and living space.

Historically, twin beds weren’t made for the average adult. They were sold in pairs for children’s rooms, hostels, and other co-living spaces. While twin beds work well for kids, they tend to be too small for grownups, especially larger individuals and restless sleepers.

For very small bedrooms, however, a twin bed may be necessary to save space. In that case, the least you can do to maximize your comfort is to upgrade to a Casper twin mattress in a box.

Most bunk beds are designed for twin mattresses, so the answer is usually yes— it makes for a great bunk bed mattress size! However, some bunk bed models accommodate a twin XL mattress (38 x 80 inches), and others have varied upper and lower bunks, usually with a twin on top and a double bed on the bottom. Before purchasing, make sure to double-check all bed frame dimensions.

How Casper keeps prices low and quality high

When Casper was founded in 2014, many people were skeptical. Would consumers really buy a standard king size mattress without testing it first? Several years and numerous awards later, we have an answer: It turns out no one likes visiting stuffy mattress showrooms to make high-stakes purchases under the scrutiny of needy salespeople. (Who knew??)

Everyone loves the ease and convenience of buying online from a trusted source, and having a high-quality mattress shipped in a box to their doorstep. And people keep spreading the word that our mattresses deliver unparalleled comfort and support, top-notch construction quality, and high-tech, innovative design.

But the Casper experience isn’t just about quality, trust, and transparency. Our mattresses are a mere fraction of other brands’ prices. That’s because we’ve flipped the mattress industry on its head. By eliminating showrooms and middlemen, we keep our costs low - and pass those savings on directly to you.