Best Mattress Guides

Best Online Mattresses

If you're looking for a new mattress, find the best options online, and have one delivered to your home with the click of a button!

By Natalie Yerger

If you’re in the market for a new mattress, lucky for you: 2021 seems to be the golden age of mattresses, with thousands of brands, styles and models available at just about every price point imaginable. That being said, the mattress world’s tendency to only get more crowded can also create problems for shoppers. The question “Which mattress should I buy?” is now accompanied by even more questions, such as “Which company’s shipping and return policies are best?,” “Do I need to try the mattress in person?,” “How long is the sleep trial?,” and more.

Not to worry, we’ve done much of the hard work for you and are sharing the best online mattresses available in 2021 in this guide. Below, you’ll find our list of the top eight mattresses available online in 2021 with categorizations that indicate the type of sleeper they’re best suited for. In the description of the eight mattresses, you’ll find all the information you need including firmness level, policies, construction, and special features.

We’ve also put together a buyer’s guide to shopping for the best online mattress. In the online mattress buying guide, we dig deeper into how to shop for a mattress online. You’ll learn about the types of mattresses available today, important characteristics to consider when shopping for one, and how to know which mattress is best for your body type, sleeping style, budget, and personal preferences. Keep reading to learn about the best online mattresses of 2021 and how to choose the best mattress for you.

Disclosure: By clicking on the product links in this article, Mattress Nerd may receive a commission fee at no cost to you, the reader. Read full disclosure statement.

The Best Online Mattresses of 2021

Casper Original

Editor’s Pick 

One of the most well-known beds in the mattress industry, the Casper is a mixed-foam mattress that offers what many shoppers are looking for: pressure relief, conforming, temperature neutrality, a reasonable price, motion isolation, and much more.

Casper Original Mattress
4.8 / 5.0


Trial period

100 nights


10 year warranty

The Casper mattress is a mixed-foam mattress made by Casper, which was launched in 2014. The Casper is the brand’s flagship model, and it’s a mixed-foam mattress made with comfort layers of polyfoam and memory foam. It also features a transitional polyfoam layer, a 7.5-inch dense support polyfoam core, and a removable, washable cover.

The Casper is our Editor’s Pick for Best Online Mattress because it checks a lot of boxes for most mattress shoppers. It’s firmness level and construction provides a nice balance of contouring and support, it isolates motion extremely well when bearing weight, and it sleeps cool when compared to other all-foam models. This mattress’s popularity (it’s now sold both online and by third-party retailers like Target) is earned by its crowd-pleasing feel and reasonable price, which is just slightly higher than the average all-foam mattress.

Read our full Casper Mattress Review for more info!

Saatva Classic

Best Affordable Luxury

Marketed as a luxury innerspring mattress, the Saatva has a very reasonable price point when compared to other luxury mattresses on the market, making it our choice for the best affordable luxury mattress in 2021.

Saatva Classic Mattress
4.7 / 5.0


Trial period

180 nights


15 year

The Saatva mattress is the Saatva brand’s flagship model, and it comes in three firmness settings and two thickness profiles to accommodate a wide variety of sleepers. Also known as the Saatva Classic, this bed is a coil-on-coil innerspring model that features a Euro-top cover, which is similar to pillow-top, thick comfort layers of polyfoam and memory foam, a transitional layer of pocketed coils, and a support layer of more pocketed coils. The brand touts its luxury firm option as being the perfect middle-of-the-road option, but it also offers additional models like the Saatva HD, Saatva Latex Hybrid, and Saatva Youth mattress.

The Saatva Classic offers many of the features of luxury models, including strong airflow through its coil layers, a sophisticated design, and strong performance across a variety of categories but is reasonably priced. The Saatva also comes with free White Glove delivery, which includes removal of your old mattress, which is a cherry on top for shoppers who want a luxury purchase experience.

Check out our full Saatva Mattress Review for more information!

Puffy Lux Hybrid

Best for Side Sleepers

The Puffy Lux Hybrid’s added comfort layers provide soft conforming in the areas where side sleepers’ bodies need it the most: the hips and shoulders.

4.9 / 5.0


Trial period

101 nights



The Puffy Lux Hybrid, Puffy’s upgrade on its flagship Puffy model, adds additional layers of foam and coils to the original model for improved contouring, comfort, and support.  In our opinion, this is one of the best mattresses in 2021 for side sleepers. The thick memory foam comfort layers allow side sleepers to sink into the bed, especially in the hip and shoulder areas, while the durable coil layer keeps them from sinking too low.

Keep in mind that the Puffy Lux Hybrid may suit lightweight and average weight sleepers best, as heavy sleepers may find the comfort layers too conforming to provide enough support for proper spinal alignment.

See our full Puffy Lux Hybrid Mattress Review to learn more!


Best Memory Foam

Constructed with high-quality memory foam, the Nectar is also a high-value pick that cradles pressure points, sleeps quiet, and costs less than most all-foam beds.

4.7 / 5.0


Trial period




If your heart’s set on the cradling, sinking feeling of a memory foam bed, you’ll love the Nectar. It’s made with three layers of memory foam that deliver excellent pressure relief and motion isolation, and, despite its high-quality construction, it’s sold at a lower price point than competing models in its category.

The Nectar’s construction features a layer of quilted gel memory foam, a secondary layer of gel memory foam, a high-density memory foam transitional layer, and a thicker support core made from high-density polyfoam. Altogether, these layers, encased in a removable poly-blend cover, create a medium-firm feel that’s body-hugging yet supportive.

Read our full Nectar Mattress Review for more info!

Cocoon by Sealy

Best Value

Looking for a trusted brand name online? Check out Sealy’ Cocoon Chill.

Cocoon by Sealy Mattress
4.4 / 5.0


Trial period

100 days


10 year limited warranty

If you have bought several mattresses, or even one mattress, in your lifetime before 4 years ago, the chance that you bought that mattress at a brick and mortar store is pretty high. As the online mattress industry continues to expand, and more and more brands begin to pop onto the scene, if you are used to a trusted brand name, it can turn you off from buying online. Well, Sealy thought that some mattress customers may be more comfortable shopping from them, even if it is online.

The Cocoon is a fantastic mattress, complete with best in class cooling features to keep the hottest sleepers cool at night. Not to mention, the Cocoon is sold at an extremely reasonable price point, and is backed by one of the biggest names in the business. We recommend this mattress for hot sleepers who love memory foam and couples who need great motion isolation.

See our full Cocoon Chill review to learn more about this mattress.

Tuft and Needle Mint

Best For Couples

If you sleep with a partner (or pet) and wake easily to their movements throughout the night, the Tuft & Needle Mint is our pick for its excellent motion isolation and ability to eliminate noise throughout the night.

tuft and needle mint hero image
4.9 / 5.0


Trial period

100 nights


10 year warranty

Tuft & Needle, a prominent bed-in-a-box brand, is the creator of the Mint Mattress, an all-polyfoam bed that knocks it out of the park with regard to pressure relief, value, and motion isolation. The bed’s constructed with gel- and graphite-infused comfort layers, a gel-infused transitional layer, and a dense support core. At roughly a 6 on the firmness scale, sleepers who like cradling without “sinking” conforming will enjoy its balanced blend of support and contouring.

As mentioned, it also produces virtually no noise, which is ideal for people who wake easily to their partner’s or pet’s movements throughout the night. Not to mention, the Tuft & Needle Mint is among the best mattresses for value-seekers, with a very reasonable price when compared to similar cooling and motion-isolating all-foam models.

Read our Tuft & Needle Mint Mattress Review to learn more!

Brooklyn Bedding Aurora

Best Cooling

The Brooklyn Bedding Aurora was built with cool sleeping in mind, with copper-infused foam layers, a phase-change cover, and a breathable hybrid design.

Brooklyn Bedding Aurora Mattress
4.8 / 5.0


Trial period

120 days


10-year limited warranty

The Brooklyn Bedding Aurora, available for purchase on and via Brooklyn Bedding’s website, is a hybrid mattress made from a cotton and quilted polyfoam surface, two comfort layers, a transitional gel foam layer, and 8-inch pocketed coils followed by a high-density support core.

Most of the Aurora’s layers have a cooling component in their construction. The bed’s surface contains a phase-change cooling molecule, the comfort layers are copper-infused, and the pocketed coils support the bed’s overall airflow and breathability. Brooklyn Bedding combats foam’s natural tendency to absorb body heat with these cooling materials and layers, making the Aurora one of the coolest-sleeping beds on the mattress market. While the Aurora is slightly more expensive than other mattresses, it’s in line with the price point of most high-quality hybrids on the market.

Read our full Brooklyn Bedding Aurora Mattress Review to learn more!

Why Buy an Online Mattress?

Affordability & Easy Set-Up

The direct-to-consumer mattress brands have been growing and expanding as many shoppers are able to have a personalized mattress shipped directly to their door. Also known as a bed-in-a-box, online mattresses often come rolled in a box with simple instructions to decompress the mattress. Although the box is much less cumbersome than a fully expanded mattress, it is still just as heavy, so you may need help moving it. 

Related: How Much Does a Mattress Weigh?

Some compressed mattresses may take time to expand and can produce an odor known as off-gassing, when the new mattress is first opened. Memory foam mattresses often have the strongest off-gassing, but most odors will dissipate within 24 hours of setting up the mattress.

Related: Is Mattress Off-Gassing Dangerous?

All of our picks for the best affordable mattresses are made by online companies. With no middlemen or brick-and-mortar stores, the manufacturers cut costs and the consumer receives the same mattress at a lower price. A majority of the online brands consistently offer sales and deals that 

Trial Period & Warranty

For hesitant shoppers, the average online mattress comes with a 100-night trial period to find out if the mattress is right for you. The risk-free trial provides time for the mattress to conform to the sleeper’s body, with most brands requiring you to sleep on the mattress for 30 nights before initiating a return. Besides a trial period, many purchases include around a 10-year warranty that covers manufacturing defects, certain indentations and other issues that arise throughout the life of a mattress. 

For more information, check out our article: What is a Mattress Warranty?

Types of Mattresses You Can Buy Online

Innerspring Mattresses

Innerspring mattresses are the most traditional mattress type and perhaps the most well-known. Although these mattresses have been around for a while, many brands incorporate new materials to provide various firmness options and feels, and are some of the best cooling mattresses.

Innerspring mattresses use steel coils as a support system and are topped with layers of foam, memory foam, latex or other comfort materials. Innerspring mattresses are bouncy and responsive to movement, giving the feeling of sleeping “on” the mattress rather than “in” it. Becuase of this, an innerspring mattress makes a great choice for combination sleepers or heavy sleepers who need additional support.

See our picks for the best innerspring mattress for more information.

Hybrid Mattresses

Hybrid mattresses are among the most popular types, as they allow mattress companies to combine the best qualities of innerspring mattresses and foam mattresses. Hybrids are constructed using individually pocketed coils at their support core and have at least one to two layers of comfort foams.

Hybrids are some of the best mattresses for back pain, by providing stabilizing support underneath pressure relieving comfort layers. Hybrid mattresses are able to suit a wide range of sleepers, ranging from lightweight side sleepers to heavy stomach sleepers- depending on the firmness level and materials of the mattress.

Keep in mind that hybrid mattresses tend to be among the most expensive models on the market, thanks to their sometimes complex constructions and the quality and variety of materials used in their makeup. It should also be noted that hybrid mattresses are constructed in a very specific way, as are many other mattress types. You’ll want to make sure you have the right side facing up before you sleep on the bed.

Related: Do You Need to Flip Your Mattress?

Latex Mattresses

Latex mattresses are constructed with comfort layers of latex or other foams and a polyfoam or latex support core. While most similar to all-foam mattresses, latex mattresses have unique qualities that set them apart from any other mattress type on the market.

Latex, derived from the rubber tree, can be converted into the foam through the Dunlop or Talalay process. Both types of latex foam have unique properties, but the Dunlop latex is generally used as a support layer. Talalay, which is plusher and conforming, is more common in the comfort layers or as the support core of softer latex mattresses. Both types of latex are more responsive and bouncy than memory foam or polyfoam but not as responsive as the combination of materials used in a hybrid or innerspring mattress.  

The benefits of latex mattresses include its durability and resistance to sagging, its ability to sleep extremely cool (a natural property of latex), the fact that it is naturally dust-, mold-, and bacteria-resistant, and the fact that latex mattresses can be made almost entirely from organic materials. If you’re an eco-conscious shopper or want a mix of responsiveness and a foam feel, you may enjoy a latex mattress and some of the best organic mattresses.

Mixed-Foam Mattresses

Most foam mattresses are constructed with a mix of foams and use a high-density polyfoam in their support layer and a mix of polyfoam and memory foam in the comfort layers. They’re known for their signature, pressure-relieving, sinking, and cradling feel, which is highly appealing for those who enjoy pressure relief and like the feeling of sleeping “in” the bed rather than “on” it. Foam mattresses are some of the best side sleeper mattresses by cradling the hips and shoulders.

Mixed-foam and memory foam mattresses can be ideal for sleepers who suffer from chronic pain, as the conforming materials are designed to cradle pressure points for a better night’s sleep. They also suit couples well, as all foam types are relatively quiet, but they aren’t as responsive as latex or hybrid models for sex. Keep in mind that, despite their great comfort levels, all-foam mattresses tend to lack in the same areas: temperature neutrality, durability, and edge support. For more motion absorbing mattresses, see our picks for the best mattress for couples.

Related: What is Edge Support in a Mattress?

Important Factors to Consider

Once you’re certain of the type of mattress you want to purchase, you’re well on your way to deciding on the best online mattress for your bedroom. From there, make sure to read through the following considerations, which together are equally as crucial as mattress type when it comes to choosing a bed that’s right for your body, budget, and sleeping style.

Your Sleeping Position

Back sleepers, side sleepers, stomach sleepers and combination sleepers: there’s no “right” or “wrong” way to sleep, per se, but every sleeper has a preferred style. Understanding your preferred sleeping position is essential to choosing the best online mattress because it will allow you to choose a bed that will properly align your spine in that position. In short, a properly aligned spine equal a better night’s sleep, more energized days, and a body that’s more resilient, healthy, and equipped to recover from stress, workouts, and life at large. Here’s what to look for each sleeping position:

  • Side Sleepers—Side sleepers’ bodies come into contact with the mattress deeper in the hip and shoulder areas, and they need the mattress to sink deeply here in order for their spines to remain aligned. Look for mattresses with very conforming top layers, like those found in hybrid and memory foam mattresses. 
  • Back Sleepers—Individuals who sleep on their backs need slight relief at their hips and shoulders, but not so much as to throw their spine out of alignment. The hips shouldn’t sink too far, nor should the shoulders, and some mattresses with zoned support systems (more support in some areas than others) can work well for this sleeper type. For more mattresses that support the spine, see our list on the best mattress for back sleepers.
  • Stomach Sleepers—We’ll let you in on a secret: stomach sleeping isn’t recommended by anyone in the medical field, but millions of people are dedicated to this position anyway. If you’re a stomach sleeper or a combo sleeper who enjoys the stomach position, look for a firmer mattress that will prevent your pelvis from sinking too deeply into the mattress, which would throw off your spine’s alignment and create aches and pains.
  • Combination Sleepers—This sleeper type changes positions throughout the night and does best on a mattress with a firmness level and features that accommodate for this tendency. For most individuals at an average weight, that means a medium-firm mattress with features tailored to their needs and preferences (breathability, “in” vs. “on” the mattress feel, motion isolation, etc.).

What Firmness & Feel Do You Prefer? 

The industry standard scale for firmness is 1-to-10, with 1 corresponding with the softest mattresses available and 10 correspondings with the firmest. Most mattresses fall between 3 and 8 on the scale, but the vast majority are between 4 and 7. The right mattress firmness for your body depends on your sleeping position, height, weight, and slightly on your personal preferences. For the most part, it depends on your sleeping position and weight.

For example, take an average-weight person. Most will find that a mattress that’s medium-firm suits their body, with side sleepers leaning more toward the softer side of that spectrum for hip and shoulder pressure relief and stomach sleepers leaning more towards the firmer side of that spectrum for hip support.

As a second example of how body type impacts firmness level, consider a lightweight (below-average weight) sleeper. Most lightweight sleepers will enjoy softer mattresses, which allow them to sink sufficiently into the surface in a way that firmer beds wouldn’t. Just like the average weight sleeper, lightweight side sleepers will lean toward the softer side of the firmness scale, and lightweight stomach sleepers will lean toward the heavier side of the firmness scale.

Lastly, heavyweight sleepers generally like firmer beds. The best firm mattresses tend to provide enough support for their bodies to prevent sinking and throwing the spine out of alignment, often being a 7 or higher on our firmness scale. 

Lifestyle Needs/Special Concerns

Once you’ve decided on the type of mattress you want and the firmness level that’s appropriate for your body, you can start taking more individualized considerations into account. Here are some examples:

  • Chronic Pain—Those who deal with back pain, have spinal issues, or suffer from aches in their joints should consider beds marketed as “orthopedic” or at least look for mattresses that have features to help alleviate these issues. Memory foam beds and hybrids with memory foam layers do an excellent job at providing a mix of conforming and support for these sleepers. For our recommendations that provide support, see our best orthopedic mattresses 
  • The tendency to Sleep Hot—Some (if not most) sleepers tend to sleep hot. To prevent waking up sweaty, look for mattresses with features that improve airflow and breathability. These can include gel- and copper-infused comfort layers and mattress covers pocketed coils for improved airflow and more. 
  • Disturbed Easily—If you sleep with a spouse, partner, or pet and wake easily to their movements throughout the night, we recommend looking into a bed with standout motion isolation. This will help minimize the transfer of the movements of your partner or pet to your side of the mattress, increasing the likelihood that you’ll sleep throughout the night. 
  • Athlete—If you’re an athlete or work out regularly, a mattress that has materials (covers and infused-foams) to improve recovery with things like infrared energy and special gels can be a consideration.


The cost of online mattresses varies drastically from just several hundred dollars to several thousand. Whatever your budget, you’ll be able to find an online mattress that fits into that range. That being said, the mattress price tag is closely correlated with quality and, while not perfectly so, this is something to keep in mind when purchasing your online mattress.

If you’re buying the bed for a temporary living space, such as an apartment, rental, or dorm room, your budget might be appropriate if it’s slightly lower. If you’re on a tighter budget, then you might want to consider looking at the best mattresses on Amazon. If you’re a new homeowner buying a king-size bed for the master bedroom in your “forever home,” we recommend investing in a mattress that’s high-quality, as cheaper ones may not be as comfortable and may even be more prone to sagging.

Related: How to Fix a Sagging Mattress


As we’ve outlined, choosing the best mattress for you will require an understanding of the mattress industry, mattress construction, sleeping styles, and other factors that are personal to you (and your partner). There are hundreds of mattresses to choose from, so we hope this list of the top online mattresses has made it just a bit easier to hone in on the mattress that’s best for you.

Recap: Top Rated Online Mattresses

Mattress Award  Nerd Score
Casper Editor’s Pick 4.8/5
Saatva Best Affordable Luxury 4.7/5
Puffy Lux Hybrid Best for Side Sleepers 4.9/5
Nectar Best Memory Foam 4.7/5
Cocoon Chill Best Value 4.8/5
Tuft & Needle Mint Best for Couples 4.9/5
Brooklyn Bedding Aurora Best Cooling 4.8/5