Casper Cloud One 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 feel of the mattress. We then take the results of those tests and compare them to every mattress we’ve tested to date.

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

Factor	Casper Cloud One	Average
Overall Score	8.70	8.53
Price (Queen)	$999	$1,066 (Memory Foam only)
Cooling – Score	9.0	8.6
Sinkage – Depth	2.46″	2.22″
Sinkage – Feel	Deep	Moderate
Motion Transfer – Score	9.0	8.2
Motion Transfer – Acceleration	7.19 m/s²	8.77 m/s²
Response Time – Score	9.6	8.8
Response Time – Mostly Recovered	0.2 sec.	0.4 sec.
Response Time – Fully Recovered	0.8 sec.	1.0 sec.
Bounce – Height	7.62″	8.79″
Bounce – Feel	Low	Moderate
Edge Support – Score	8.2	8.7
Edge Support – Sitting	4.25″	3.94″
Edge Support – Lying	Good	Excellent
Sex – Score	7.8	8.2
Pressure Relief – Score	9.0	8.6
Comfort Layer Thickness	4.50″	4.29″
Mattress Thickness	10.50″	12.21″
Off-Gassing – Score	5.8	8.0
Off-Gassing – Smell	Strong	Strong
Off-Gassing – Days	15 days	7 days
Company – Score	9.0	8.8
Trial	100 nights	178 nights
Warranty	10 years	41% have lifetime warranties, average of other 59% of mattresses is 13 years

How is Casper Cloud One Different?

The Casper Cloud One is a 10.50″ memory foam mattress with an overall performance level that is slightly higher than average and a price tag that is slightly below the average. This difference allows for a savings of $67 compared to the average memory foam mattress.

Advantages

Specific advantages of the Casper Cloud One includes better cooling performance, lower levels of motion transfer, faster material response time, and better pressure relief.

Casper’s company score is slightly better than average, despite having a shorter trial period than average.

Neutral Factors

This mattress has deep sinkage and low levels of bounce. If you like sleeping “in your mattress” and not “on your mattress”, this will likely be an attractive feel for you.

Disadvantages

The sex score is disadvantages for couples on this mattress, as the lower level of bounce makes this mattress more strenuous and tiring to have sex on. Edge support is also slightly below average as well.

Lastly, if you’re sensitive to strong odors, the Casper Cloud One took 15 days to fully stop smelling in our tests, nearly twice as long as average.

The Casper Cloud One has excellent cooling. During our tests, I did not feel any significant level of heat retention around my body.

Typically, we see memory foam mattresses struggling more with cooling, but that’s not what we objectively measured or experienced here. This mattress has multiple design and material elements that are helping to improve cooling, including the thin breathable cover and open cell poly foam top layer.

• 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

However, arguably the biggest impact on cooling is the support foam layer, which, instead of being a solid block of foam has been cut with pillar-like columns. These columns help to notably improve breathability and airflow.

In our objective temperature tests, we measured a max surface level temperature of 89.1° F. This is 0.9° cooler than the average of 90.0° F, based on all of our tests to date.

After getting off the mattress, the temperature declined by 3.2 degrees from minutes 0 to 1, which is 1.6 degrees warmer than the average 0 to 1 minute decline of 4.8 degrees.

When we consider the combination of objective data, my subjective experiences, and an analysis of the materials, I’m confident in my view that cooling is excellent.

The Casper Cloud One has deep sinkage. During our tests, we measured a pressure point sinkage depth of 2.46″. This is 0.24″ more sinkage than the average sinkage depth of 2.22″, based on all of our tests to date.

The mattress creates a dramatic body contouring hug. The thin, non-quilted cover creates more direct engagement with the foam layers below.

In addition, this mattress is equipped with a 2.5” memory foam layer within the core, which is driving much of the dramatic body contouring hug.

The level of sinkage is documented in the image below.

The foam layers form precisely to the exact and unique shape of the body. This mattress has a highly unique feel resulting from the support layer. That support layer is cut or formed with a series of pillar-like structures that the comfort layers sit atop.

That is certainly helping with cooling, but it also allows for deeper sinkage, a more pronounced hug, and a delayed sinkage into the mattress.

When you first lie down on the mattress, it feels as if it’s going to have a more moderate sinkage and standard level of pushback, but then you can feel the pillar supports within the support layer giving way and allowing for that deeper drop down into the foam layers.

This is neither good nor bad, but it is a very specific feel that you’ll need to enjoy in order to be comfortable on this mattress.

The Casper Cloud One has a very low level of motion transfer. During our tests, we measured a total acceleration range of 7.19 m/s². This is 18% less motion transfer than the average of 8.79 m/s².

Memory foam mattresses typically have less motion transfer than average and that’s exactly what we measured here.

The combination of all foam design, deeper sinkage, and thicker 2.5” memory foam layer within the core are all working together to help keep motion transfer lower.

In addition, the below-average level of bounce at 7.62” means there is less energy and motion for the mattress to contend with.

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 peaks from 0 to 0.2 seconds. Immediately thereafter, we see motion declining notably.

By 0.56 seconds, we’ve returned to near-zero levels of energy, which is 0.32 seconds shorter than the average motion duration of 0.88 seconds.

Both the motion intensity and motion duration are better than average. Overall, motion transfer is very low and I don’t expect it will be an issue for most sleepers.

The Casper Cloud One has an extremely fast mostly recovered response time and a fast fully recovered response time.

In 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, based on all of our tests to date.

In our fully recovered responsiveness test, we measured a recovery speed of 0.8 seconds, which is 0.22 seconds faster than the average of 1.02 seconds. While these recovery speeds aren’t quite instant, they are better than average and also notably better than we typically see on memory foam mattresses.

Often, memory foam mattresses, especially those that utilize more traditionally formulated memory foam, will struggle with slower material recovery speeds. Certainly, that wasn’t the case here.

The level of responsiveness is documented in the video below.

I would describe the Cloud One’s memory foam as a “modern memory foam”, owing to the fact it’s cooler, highly responsive, and quickly able to recover to its original shape.

The faster-than-average material responsiveness ensures the mattress is easy to move around on and the mattress never creates any type of a “stuck” feeling.

The Casper Cloud One has a low level of bounce. During our tests, we measured a total bounce height of 7.62″. This is 1.20″ less bounce than the average of 8.82″, based on all of our tests to date.

This mattress has multiple design and material attributes that reduce bounce, including the all-foam design, a 2.5” memory foam layer within the cover, and support foam with pillar-like columns.

Foam, especially memory foam, simply doesn’t return as much energy as coils do. In addition, the pillar-like columns, while great for pressure relief, motion transfer, and cooling, don’t appear to be rebounding much energy.

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

In our tests, we measured just 1.75” of rebound, which is notably below the average rebound height of 3.61”, based on all mattresses we’ve tested to date.

The lower bounce is great for helping to reduce motion transfer; however, it’s also the reason that sex performance isn’t great. So that’s something to consider.

The Casper Cloud One has good sitting edge support and good lying edge support.

In our sitting edge support test, we measured a sitting sinkage compression of 4.25″. This is 0.32″ more sitting sinkage than the average of 3.93″, based on all of our tests to date.

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

While lying directly on the edge of the mattress, I felt that the support was good in all sleeping positions.

According to Casper’s product page, this mattress is equipped with “…layers of foam that provide consistent support edge-to-edge and long-term durability.”

In my view, that does not sound like reinforced edge support to me. Instead, it sounds like the mattress has the same level of support across the entirety of the support layer.

After cutting the mattress open to assess the layers, I see no indication or evidence that this mattress is utilizing reinforced edge support layers.

All that to say, all foam mattresses, especially those that contain thick memory foam comfort layers, tend to struggle more with edge support and that’s exactly what we measured and experienced here.

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

In my view, the key issue is simply the memory foam, which creates a dramatic body contouring hug. That dramatic hug in the middle of the mattress is great, creating excellent pressure relief.

However, that same hug at the edge creates a weakening of edge support, causing the edge to feel less supportive.

All that to say, this level of edge support isn’t bad at all. In fact, I would still call it “good”, and yet, it’s clear it doesn’t rise to the excellent or outstanding level, in my view.

The Casper Cloud One has fair sex performance. On the positive side of things, this mattress has minimal noise and both excellent pressure relief and cooling.

In addition, edge support is good and we measured 4.25” of sitting edge sinkage. At this level, it’s a bit worse than average, but should still be supportive enough to be a functional and usable part of the mattress for amorous activities.

Lastly, we have the one big negative, which is bounce. We measured bounce at 7.62”, which is notably less bounce than average. When it comes to sex, more bounce is almost always better.

Sex Factor	Factor Weight	Score	Rating
Bounce	65%	7.2	Moderate
Edge Support	20%	8.4	Good
Noise	5%	10	Minimal
Pressure Relief	5%	9.0	Excellent
Cooling	5%	9.0	Excellent

The limited level of bounce makes this mattress more tiring and strenuous to have sex on.

To be fair, this isn’t an issue with the Casper Cloud One specifically, but rather most memory foam mattresses. Memory foam just doesn’t create as much bounce and when it comes to sex, memory foam isn’t an ideal material.

The Casper Cloud One has an excellent level of pressure relief. During our tests, I felt no significant pressure points on my body. Overall, I found the mattress quite comfortable.

The mattress is equipped with 4.5″ of comfort material, which is 0.23″ more comfort material than the average comfort layer thickness of 4.27″, based on all of our tests to date. During our tests, I cut the mattress open to assess the foams and I’m pleased with what I see.

Foam quality looks and feels good, both on the body and in hand. The Cloud One has a more unique type of support foam that has been cut or formed in a way to create pillar-like support columns.

In my view, these pillar supports are part of the reason we experienced a more dramatic body contouring hug. Said hug is also partially driven by the thick 2.5” memory foam layer, all foam design, and thin non-quilted cover.

In our objective pressure mapping tests, we measured a max PSI of 0.52. This is well within the 1.0 PSI threshold that I ideally want to see from our testing data.

Pressure Relief (PSI)	Average	Maximum
Side Sleepers	0.11	0.48

Pressure Relief (PSI)	Average	Maximum
Back Sleepers	0.07	0.52

Pressure Relief (PSI)	Average	Maximum
Stomach Sleepers	0.07	0.41

When I consider our objective pressure mapping tests, material thickness, material quality, and my subjective experience on the mattress, I’m confident most sleepers will find the pressure relief to be excellent.

The Casper Cloud One had a strong smell upon the initial unboxing. The mattress smelled like wet paint straight out of the box and smelled for 15 days. This is 7.9 days longer than the average smell duration of 7.1 days.

Casper mattresses come with a 100-night trial period and a 10-year warranty. Shipping and returns are both free.

Company Factor	Factor Weight	Score	Data
Returns	40%	10	$0
Trial Period	30%	8.0	100 nights
Warranty	20%	8.0	10 years
Shipping	10%	10	$0
Country of Origin	0%		USA

Comparing 103+ brands tested to date, the average trial period is 175 nights, 75 nights more than Casper offers. The average warranty is 14 years, which is 4 years longer than the Casper 10-year warranty.

In addition, this 14-year average excludes the 42% of mattresses that offer lifetime warranties.

The Casper Cloud One has a medium-firm feel, 6 out of 10 on the firmness scale, and is the most popular firmness for mattresses we’ve tested.

Casper is rating this as a Medium-soft feel. However, in my view, it feels like a very standard medium-firm. I would not describe this mattress as medium-soft.

Support on the Casper Cloud One is excellent. During our tests, I felt well supported in all sleeping positions.

The mattress is equipped with a 6.0″ support layer. This is 1.91″ thinner than the average support layer thickness of 7.91″, based on all of our tests to date.

Support Factor	Data
Comfort Layer	4.50″
Support Layer	6.00″
Firmness	Medium-Firm
Body Contour	Dramatic
Zoned Support	No
Reinforced Edge	No

To create ideal support a mattress must both support the body, keeping it in a neutral alignment, while also creating ample pressure relief. Casper Cloud One achieves both of those requirements.

This mattress has a medium-firm feel, which is ideal for most body types and sleeping positions. On Casper’s product page they rate the mattress at a medium-soft feel. I do not agree with their firmness assessment. Based on tests of 380+ mattresses to date, this mattress has a standard medium-firm feel (6 out of 10 firmness), in my view.

The biggest support factor to consider is simply the memory foam design.

This mattress creates a dramatic body contouring and a deep level of sinkage. You can really feel the memory foam layers contouring to the exact shape of the body. This isn’t good or bad, but it is a specific feel.

To feel well supported by the mattress you’ll really need to prefer the body contouring hug of memory foam.

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

Sleeper Weight	Stomach Sleeper	Side Sleeper	Back Sleeper
Under 150 lbs.	Yes	Yes	Yes
150-250 lbs.	Yes	Yes	Yes
250-300 lbs.	Yes	Yes	Yes

Lastly, this mattress does not use any type zoned support, which is typical for memory foam mattresses within this price tier.

Based on all of my tests to date, an analysis of the materials, and my subjective experiences, I’m confident most sleepers will find support on the Casper Cloud One is excellent.

The Casper Cloud One is a 10.50″ memory foam mattress that comes in a single firmness option—Medium-Firm. Within the Casper collection, the Cloud One is an upgraded version of the original Casper One. You can find our review on the Casper One here.

Design Factor	Data
Type	Memory Foam
Thickness	10.50″
Cover Type	Thin
Weight	66 lbs.
Has Handles	No
Fiberglass-Free	Yes
Ships in a Box	Yes

Casper claims that the Cloud One has a softer feel, but in our tests, these mattresses had nearly the same firmness.

I would say that the more noticeable difference is with the level of sinkage. The Cloud One allows for deeper sinkage and engagement whereas the Casper One has only a minimal level of sinkage.

The Casper Cloud One is 10.50″ thick and contains a combination of different foam types. From top to bottom, here is a full list of the materials used in this mattress:

Layer Type	Thickness	Layer Specs
Poly Foam	2.00″	Not Available
Memory Foam	2.50″	Not Available
Support Foam	6.00″	Not Available

The Casper Cloud One has a thin cover. It is soft and stretchy, using a blend of 99% polyester and 1% spandex. This cover appears to be similar to the cover used on the Casper One.

The comfort layer is 4.50″ thick and made of two layers of foam. On top, there is a 2.0″ poly foam (blue foam) followed by a 2.5″ memory foam layer (pale yellow foam).

The memory foam serves the role as comfort material as well as transitional support layer between the top foam and the support foam below.

The support layer is 6.00″ thick and made of a single layer of support foam (white foam). This layer of support foam has been cut to form pillar-like columns within the foam. These foams allow for greater airflow and more sinkage.

Product Evolution

Casper launched in 2014 with the Casper all-foam mattress. In 2019, Casper hybrids entered the chat and models continued to be added until it hit max capacity in 2023.

In early 2024, Casper discontinued their entire mattress line and launched 5 brand-new mattresses.

Prior to this rework, there were 4 Casper foam mattresses:

• The Casper
• Casper Original
• Casper Select (Costco exclusive)
• Casper Select Cooling (Costco exclusive)

Casper’s 2024 lineup included:

• Casper One – all foam, most basic, least expensive
• Casper Dream – least expensive hybrid
• Casper Dream Max – higher performance hybrid
• Casper Snow – least expensive, cooler hybrid
• Casper Snow Max – higher performance, cooler hybrid

In 2025, the Casper Cloud One launched. This new model sits in between the Casper One and Casper Dream in terms of price.

The Cloud One has a significantly better performance than the Casper One.

Do Casper Mattresses Contain Fiberglass?

As of January 2024, Casper has updated the fire barrier of their mattresses. The previous fire barrier, which contained fiberglass, has now been updated to use a Rayon fiber-based product instead of the traditional fiberglass.

The Casper Cloud One does not contain fiberglass.

Other Mattresses to Consider

Frequently Asked Questions

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