Casper Atlas Review

In This Review
Performance Tests | Firmness | Support & Sleeping Positions | Design | Materials | Comparisons | FAQs

At NapLab, we put each mattress to the test.

We test 10 different factors that impact the performance, comfort, and value of the mattress. We then take the results of that test and compare to every mattress we’ve tested to date.

Check out the full performance table below to see how this mattress ranks:

Factor	Casper Atlas	Average
Overall Score	8.05	8.58
Price (Queen)	C$1199	C$1,862 (Hybrid only)
Cooling – Score	8.0	8.7
Sinkage – Depth	2.11″	2.13″
Sinkage – Feel	Moderate	Moderate
Motion Transfer – Score	7.2	8.2
Motion Transfer – Acceleration	11.15 m/s²	8.71 m/s²
Response Time – Score	9.9	9.0
Response Time – Mostly Recovered	0.2 sec.	0.4 sec.
Response Time – Fully Recovered	0.4 sec.	0.9 sec.
Bounce – Height	11.28″	9.66″
Bounce – Feel	High	Moderate
Edge Support – Score	8.1	8.6
Edge Support – Sitting	4.50″	4.04″
Edge Support – Lying	Good	Good
Sex – Score	9.1	8.5
Pressure Relief – Score	8.0	8.7
Comfort Layer Thickness	3.0″	4.1″
Mattress Thickness	10″	12.0″
Off-Gassing – Score	4.2	8.1
Off-Gassing – Smell	Strong	Strong
Off-Gassing – Days	21 days	7 days
Company – Score	8.5	8.6
Trial	100 nights	173 nights
Warranty	10 years	24% have lifetime warranties, average of other 76% of mattresses is 13 years

How is Casper Atlas Different?

The Casper Atlas is a Canadian hybrid mattress with below-average performance and a price that below average, roughly half the price of the average hybrid mattress.

Advantages

In our performance tests, the Atlas has a faster material response time than average as well as a better sex score than average (thanks to the higher levels of bounce).

Neutral Factors

This mattress has moderate levels of sinkage and high levels of bounce. It has a balanced level of contour but with an active surface.

Disadvantages

While the low price is an attractive advantage to many, it comes with a wide variety of disadvantages. The downsides of the Atlas include worse cooling performance than average, higher levels of motion transfer, struggling edge support, and a thinner comfort layer.

The Atlas offers only 3.0″ of comfort material, which hurts the pressure relief score and can be a big disadvantage, especially for heavier weighted sleepers.

The Casper Atlas has a good level of cooling performance. During our tests, I felt a slight level of heat retention around my body, but it was nothing excessive. The mattress has a basic, but proven material and layered design.

We have 3.0” of comfort foam on top of a 7.0” support layer (6.0” of which is a coil unit and a 1.0” foundational foam). The pocketed coil layer and thin knit cover bring plenty of air into the mattress and increase breathability.

Even so, the foams themselves aren’t tremendously high quality. As a result, they do still retain a more noted level of heat within them.

• Baseline Temperature – the temperature of the mattress before anyone lies on it
• Maximum Temperature (0 minute) – the temperature of the mattress after lying on it for 15 minutes
• Ending Temperature (5 minute) – the temperature of the mattress after being lied upon and having no one on it for 5 minutes

During our objective temperature tests, we measured a max surface level temperature of 91.0°, which is 1.3° warmer than the average of 89.7°.

Heat Dissipation Over Time

When we consider the objective temperature data, my subjective experiences, and an analysis of the materials, I’m confident most sleepers will find cooling performance to be good, but also far from great.

The Casper Atlas has a moderate level of sinkage. During our tests, we measured a pressure point sinkage depth of 2.11”. This is 0.02” less sinkage than the average of 2.13”.

The level of sinkage is documented in the image below.

The Atlas creates a balanced level of body contouring hug. It’s more of a generalized hug when you first lie down and then you can feel the memory foam layer start to activate and contour to the body.

The thin knit cover helps to create a more balanced feel and avoid any type of an excessive hug or overly deep sinkage. It seems to be a feel designed to be enjoyed by many types of sleepers.

The Casper Atlas has a moderate level of motion transfer. During our tests, we measured a total acceleration range of 11.15 m/s². This is 28% more motion transfer than the average of 8.71 m/s².

When it comes to motion transfer, the Atlas just doesn’t have much going for it. The combination of a relatively thin 3.0” comfort layer, a relatively thin 10.0” total profile, a more budget-friendly pocketed coil base, and high bounce are all contributing to the higher motion.

The level of motion transfer is also documented in the video below.

In our motion transfer chart, which visualizes our accelerometer data, we can see the highest motion transfer from 0 to 0.14 seconds. We see a motion decline immediately thereafter, but it’s still not until 0.86 seconds that we return to near-zero levels of energy.

Neither the motion peaks nor motion duration paints a pretty picture. Motion at these levels can be more of an issue for sleepers who are more sensitive to movements during the night.

The Casper Atlas has a very fast material response time. During our mostly recovered test, we measured a recovery speed of 0.2 seconds, which is 0.21 seconds faster than the average of 0.41 seconds.

The level of responsiveness is documented in the video below.

During our fully recovered test, we measured a recovery speed of 0.4 seconds, which is 0.50 seconds faster than the average of 0.90 seconds. These are effectively instant material responsiveness speeds.

The mattress rebounds back to shape incredibly quickly so sleepers will never feel stuck in the mattress or have difficulty moving around.

The Casper Atlas has a high level of bounce. During our tests, we measured a total bounce height of 11.28”. This is 1.60” more bounce than the average of 9.68”.

The level of bounce is also documented in the video below.

The higher bounce greatly benefits ease of movement and sex performance. However, it’s also a significant reason for the higher levels of motion transfer.

For solo sleepers or couples who don’t mind the extra motion transfer, the extra bounce is wonderful.

However, if that’s not the case the bounce can be a bit of a mixed bag where you’ll have to weigh for yourself if the benefits of improved amorous activity and ease of movement are worth the higher motion.

The Casper Atlas has good edge support for both sitting and lying, however, it’s also far from great. During our sitting edge support tests, we measured a sitting sinkage compression of 4.50”. This is 0.46” more sitting sinkage than the average of 4.04”.

While we did not experience a complete collapse of materials when sitting on the edge, I definitely did not feel well supported either.

When wearing our weighted vest to bring my weight up to 200 pounds there is a more significant collapse of materials that will be of note for heavier weighted sleepers.

The level of edge support while seated is documented in the images below.

Lying edge support is a similar story. While lying directly on the edge of the mattress I felt reasonably well supported, but it definitely doesn’t reach levels of “excellent” or “outstanding” support.

The level of edge support while lying is documented in the images below.

According to Casper, the Atlas uses “flex coils with Casper edge support”, which appear to be a reinforced coil along the edge of the mattress.

However, Casper’s product page doesn’t do much to explain what “flex coils with Casper edge support” means in more precise terms.

All that to say, edge support is about where we expect it for a budget-friendly mattress that’s only 10” thick. Given the pricing parameters and layered design, there is only so much the mattress can accomplish for edge support.

The Casper Atlas has excellent sex performance. While the high bounce is detrimental for motion transfer, it is a tremendous boon for the dance without pants. 11.28” of bounce earns the Atlas a perfect score for sex bounce.

Sex Factor	Factor Weight	Score	Rating
Bounce	65%	9.5	Very High
Edge Support	20%	8.1	Good
Noise	5%	10	Minimal
Pressure Relief	5%	8.0	Good
Cooling	5%	8.0	Good

In addition, noise also earned a perfect score. Pressure relief, cooling, and edge support are definitely not perfect, but they are more than serviceable for amorous activities.

Ultimately, there is no greater factor for amorous activity performance than high bounce. The Atlas has fantastically high bounce, which greatly carries the sex score.

The Casper Atlas has a good level of pressure relief, but it doesn’t quite rise to the “excellent” or “outstanding” level.

During our tests, I felt a slight level of pressure points building in my lower back.

The mattress is equipped with a 3.0” comfort layer, split into a 1.5” memory foam and 1.5” poly foam. This is notably thinner than the average comfort layer thickness of 4.1”, based on all of our tests to date.

With less comfort material there is simply less the mattress is able to accomplish with respect to pressure relief.

All that said, the combination of memory foam and poly foam does create a more balanced and less-polarizing type of a feel.

With this in mind and the excellent price point, it’s hard to complain too much about the pressure relief. While pressure relief could absolutely be better, given the price, it’s a perfectly reasonable and expected level of performance.

If you need the absolute best pressure relief Casper can offer you should go with the Casper Snow.

Pressure Map – Side Sleepers

Pressure Relief (PSI)	Average	Maximum
Side Sleepers	0.21	1.43

Pressure Map – Back Sleepers

Pressure Relief (PSI)	Average	Maximum
Back Sleepers	0.11	1.22

Pressure Map – Stomach Sleepers

Pressure Relief (PSI)	Average	Maximum
Stomach Sleepers	0.14	1.06

Off-gassing on the Casper Atlas is strong right out of the box and the mattress takes 21 days to fully offgas.

Compared to the average off-gassing duration among all mattresses tested to date (7 days), the Atas takes three times as long to get the job done.

In addition, the odor isn’t even that of a typical foam mattress. Instead, the Atlas smells like wet paint as it off-gasses, especially for the first week or so.

Casper mattresses, whether manufactured in the US or Canada, come with a 100-night trial period and a 10-year warranty. Shipping and returns are both free.

Company Factor	Factor Weight	Score	Data
Trial Period	15%	8.0	100 nights
Warranty	10%	8.0	10 years
Shipping	5%	10	$0
Returns	20%	10	$0
Trust	50%	8.0	Good
Country of Origin	0%		Canada

Compared to the average trial and warranty, Casper has a shorter trial (average: 173 nights). The warranty is also notably shorter. Of the 245+ mattresses tested to date, 24% have lifetime warranties and the average of other 76% of mattresses is 13 years.

The Casper Atlas is available in a single firmness, 6 out of 10, and with a medium-firm feel.

This is the most popular firmness and is widely preferred among a range of sleeper profiles and preferences.

The Casper Atlas has excellent support. During our tests, I felt well-supported in all sleeping positions. The mattress uses a 7.0” support layer, which includes a 6.0” pocketed coil unit and 1.0” support foam.

This is slightly thinner than the average support layer, which is 7.9” thick, based on all of our tests to date. Despite being a little thinner than average, the Atlas performed well during our tests and it created sufficient support.

For some sleepers, the limited 3.0” comfort layer could create pressure relief issues, especially for side sleepers, heavier-weighted bodies, and those who are more sensitive to pressure.

Even so, as with pressure relief, it’s hard to complain too much. This is a reasonably good quality support layer. While it isn’t perfect, considering the price point, it’s exactly what I expect. Most sleepers should find support to be sufficient.

Check out the table below to see the sleeper weights and sleeping positions that would be best suited for this mattress.

Sleeper Weight	Stomach Sleepers	Side Sleepers	Back Sleepers
Under 150 lbs.	Yes	Yes	Yes
150-250 lbs.	Yes	Maybe	Yes
250-300 lbs.	Maybe	No	Maybe

Design

The Casper Atlas is a 10″ hybrid mattress with a medium-firm firmness (6 out of 10) and a balanced feel. It is designed as a value hybrid and is only currently available in Canada. It’s unlikely this model will ever be available in the US or anywhere else.

Materials

This mattress is made up of four different layers. Beneath the cover, the top two layers are dedicated to comfort and the bottom two layers are for support.

From top to bottom, layers include:

• 1.5” memory foam
• 1.5” poly foam
• 6.0” pocketed coils
• 1.0” support foam

The Cover

The cover of the Casper Atlas is a thin knit cover, with good stretch and breathability, much like what we saw on the Casper Dawn.

The cover is removable with a polyester / spandex blend on the top and sides and 100% polypropylene on the bottom.

The Comfort Layer

The comfort layer is a 1.5″ memory foam (gray foam) followed by a 1.5″ poly foam. These layers work together to provide top level comfort and transitional support as sleepers begin to engage with the deeper support layer.

The Support Layer

The support layer is a 6.0″ pocketed coil layer with a 1.0″ high-density support foam at the base of the mattress.

A wide perimeter foam helps to support the edges of the mattress while also limiting noise and motion transfer from the core of the mattress.

Product Evolution

The Casper Atlas was released in May 2024, specifically to the Canadian market. Since its release, there have been no major design or material changes made to the mattress.

Currently, the Casper Atlas is only available in Canada.

Other Mattresses to Consider

Not sure if the Casper Atlas is the right pick for you? Check out these three other top-rated hybrid mattresses for high-performing alternatives you may want to consider. All of the following are made in Canada.

Frequently Asked Questions

Still have questions? Check out some of the top FAQs on the Casper Atlas mattress below and get the answers you’re looking for.