Novaform ComfortGrande 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:

How is Novaform ComfortGrande Different?

The Novaform ComfortGrande mattress is a 13″ memory foam mattress with worse overall performance than average, but also a price point that is 48% less than the average memory foam mattress—a savings of over $650 for a queen mattress.

But you are certainly taking a hit on performance, where it scored in the bottom 2% of all mattresses tested to date. Even if you’re looking for a budget pick, the Novaform ComfortGrande may be a tough sell.

Advantages

Beyond the price, other advantages for the Novasform include fast material response time, a thicker mattress profile (1″ thicker than average), and a long, forgiving trial period.

Neutral Factors

This mattress has sinkage levels that are about average and bounce levels that are 13% less than the average level of bounce. Both sinkage and bounce remain more preferential factors, but still certainly worth considering.

Disadvantages

Performance disadvantages for this mattress are numerous, including worse cooling performance than average, 27% higher levels of motion transfer, worse edge support, struggling sex performance, and an off-gassing period that is nearly 3X the average.

Factor	Novaform ComfortGrande	Average
Overall Score	7.34	8.64
Price (Queen)	$480	$1,137 (Memory Foam only)
Cooling – Score	7.0	8.8
Sinkage – Depth	2.14″	2.16″
Sinkage – Feel	Moderate	Moderate
Motion Transfer – Score	7.4	8.2
Motion Transfer – Acceleration	10.81 m/s²	8.64 m/s²
Response Time – Score	9.8	8.9
Response Time – Mostly Recovered	0.2 sec.	0.4 sec.
Response Time – Fully Recovered	0.5 sec.	0.9 sec.
Bounce – Height	8.32″	9.69″
Bounce – Feel	Moderate	Moderate
Edge Support – Score	6.9	8.6
Edge Support – Sitting	4.75″	4.07″
Edge Support – Lying	Mediocre	Good
Sex – Score	7.7	8.5
Pressure Relief – Score	6.0	8.8
Comfort Layer Thickness	5.5″	4.2″
Mattress Thickness	13″	12.0″
Off-Gassing – Score	6.1	8.4
Off-Gassing – Smell	Strong	Strong
Off-Gassing – Days	14 days	6 days
Company – Score	8.8	8.7
Trial	365 nights	165 nights
Warranty	20 years	25% have lifetime warranties, average of other 75% of mattresses is 14 years

The Novaform ComfortGrande has fair cooling performance.

During our tests, I felt a moderate level of heat retention around my body. The mattress uses an all-foam design with a memory foam comfort layer and lacks any type of significant cooling features, cover, materials, or design that would help to cool the mattress.

The ComfortGrande does use a convoluted transition foam in the core of the mattress, which often can help reduce heat retention due to the air gap. However, the foam quality of this layer is unimpressive.

Any benefit of the convoluted design seems to be outweighed by the relative low quality of the foam.

• 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 tests, we measured a max surface level temperature of 90.6°F, which is 1.06° warmer than average.

While the heat dissipation numbers were good, I believe they look far better than the reality as we tested this mattress during the winter.

Heat Dissipation Over Time

All that said, this is a fairly cheap mattress, so the cooling performance level is exactly where I expect it to be.

If cooling is critically important to you then you will likely want to avoid all foam mattresses, be they Novaform or anything else, and go with a hybrid or coil-based mattress.

The Novaform ComfortGrande has a moderate level of sinkage. In our pressure point sinkage tests, we measured a sinkage depth of 2.14”. This is 0.03” less sinkage than the average of 2.17”.

The level of sinkage is documented in the image below.

The Novaform creates a high degree of body contouring hug. It has the classic memory foam feel that wraps foam around and contours to the exact shape of your body.

Given the depth and dramatic contouring, it also makes the mattress more difficult to move around on and change positions, despite the fact the response time is fairly quick.

You will absolutely need to like the feel of memory foam and dramatic body contouring to be comfortable on the ComfortGrande.

The Novaform ComfortGrande has a moderate level of motion transfer. In our tests, we measured a total acceleration range of 10.81 m/s². This is 27.2% more motion transfer than the average of 8.50 m/s².

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

Given the all-foam design, I expected motion transfer to be considerably lower. However, mattresses that include convoluted foam can sometimes create higher motion.

The convoluted layer allows for pressure and body weight to more easily and abruptly compress the mattress. This sudden drop creates more energy that transfers across the mattress as motion.

In our motion transfer chart, which visualizes our accelerometer test, we see high motion from 0 to 0.15 seconds.

But it’s not until 0.70 seconds that we return to near-zero levels of motion. The high motion spikes and less-than-great motion duration tell the same story, motion transfer just isn’t great on the Novaform ComfortGrande.

The Novaform ComfortGrande has a very fast material response time. During our tests, the mattress was able to mostly recover back to shape within 0.2 seconds and fully recover back to shape within 0.5 seconds.

Both of these categorical response measurements are faster than average, by 0.2 and 0.36 seconds, respectively. I was pleasantly surprised by the response time.

The level of responsiveness is documented in the video below.

Typically, all poly foam and memory foam mattresses struggle with response, creating more of a stuck feeling that’s difficult to move around on. However, the ComfortGrande had no issues rebounding back to shape effectively instantly. 

The Novaform ComfortGrande has a moderate level of bounce. During our tests, we measured a total bounce height of 8.32”. This is 1.29” less bounce than the average of 9.61”.

A lower bounce is expected when it comes to an all-foam mattress design. This is doubly true when convoluted foam layers are utilized, as they are in the ComfortGrande.

Even so, at 8.32”, the ComfortGrande is within the 8-12” ideal bounce range that I hope for.

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

At this level, it’s enough bounce to create ease of movement and aid in sex performance, while still remaining low enough to keep motion transfer held to a reasonable level. I don’t expect most sleepers will find the level of bounce to be problematic. 

Edge support for both sitting and lying is mediocre on the ComfortGrande.

During our sitting edge support tests, we measured a sitting sinkage compression of 4.75”. This is 0.65” more sinkage compression than the average of 4.10”.

Ideally, we want to see 4.0” or less on sitting sinkage, which the Novaform just isn’t able to achieve. When sitting directly on the edge of the mattress there is a notable collapsing feel of the materials. Given that I only weigh 140 pounds that is especially concerning. 

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

Lying edge support is fair at best. When lying directly on the edge of the mattress I did not feel well supported.

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

The edges are quite squishy, primarily due to the all foam design, inclusion of convoluted foam (foam with cut outs) in the core of the mattress, and lack of a perimeter edge support foam. All of these factors serve to reduce edge support. Overall, edge support for both sitting and lying just isn’t good.

The best mattresses for sex have high bounce, good edge support, quiet materials, and good pressure relief and cooling.

These 5 factors make up the NapLab sex performance score.

Sex Factor	Factor Weight	Score	Rating
Bounce	65%	7.7	Moderate
Edge Support	20%	7.8	Fair
Noise	5%	10	Minimal
Pressure Relief	5%	6.0	Mediocre
Cooling	5%	7.0	Fair

The Novaform ComfortGrande has fair sex performance. This mattress has moderate bounce and good, but not great edge support.

These two factors alone make up 80% of the sex score. The memory foam comfort layer really deadens bounce and makes it difficult to enhance sex performance.

These foams are also detrimental for edge support as well, which can be a problem if you and your partner often utilize the edge of the mattress for the dance without pants.

Lastly, although it isn’t worth a huge amount, pressure relief really struggles on the Comfortgrande as well, further hurting the overall sex score.

Pressure relief on the Novaform ComfortGrande is mediocre at best. During our tests, I felt a significant level of pressure point build up in my shoulders and lower back.

In my nearly decade of testing mattresses, there have been very few mattresses I’ve tested that I have had this level of discomfort while lying on the mattress for an extended duration.

In my view, this is simply not a comfortable mattress.

The foam quality isn’t great and the decision to use convoluted foam within the core of the mattress, while helping to improve cooling, creates worse pressure relief by bringing sleeper bodies into greater contact with the harder support foam. 

The Novaform ComfortGrande has mediocre off-gassing performance.

Off-gassing is strong upon the initial boxing and the odor lasted for a full 14 days before fully dissipating.

The average off-gassing period of mattresses tested to date is 5 days. At 14 days the Novaform is almost 3X longer than average.

The company score takes a look at factors that may influence your experience with the mattress.

Factors include length of the trial period, warranty, shipping / return costs, and country of origin.

Company Factor	Factor Weight	Score	Data
Trial Period	15%	10	365 nights
Warranty	10%	8.0	20 years
Shipping	5%	10	$0
Returns	20%	10	$0
Trust	50%	8.0	Good
Country of Origin	0%		USA

The Novaform ComfortGrande has good company policies.

Being that this mattress is sold from Costco, the Costco return policy applies, while still being backed by the Novaform warranty.

Costco has a very generous return policy and allows mattress returns basically at any time. Even without a receipt, you can simply drive to the nearest Costco warehouse, show your membership card (to verify that it was purchased from Costco), and receive a full refund back onto the card you paid with or store credit.

One note, this is applied to mattresses in good shape. Damaged mattresses may be excluded from this return policy.

Novaform also backs the mattress with a 20-year warranty which protects from manufacturer defects or failures during that time.

The Novaform ComfortGrande mattress has a medium feel with a firmness rating of 5 out of 10 (where 10 is the most firm).

A medium feel like this would usually strike a nice balance—generally being firm enough to provide support for heavier sleepers, while still being soft enough to provide pressure relief for lighter sleepers.

Unfortunately, it’s not that simple with the Novaform, as I’ll explain below.

Support on the Novaform ComfortGrande is fair. As with pressure relief, I am unimpressed with the level of support.

The higher degree of sinkage compounded with fair-at-best pressure relief creates a support dynamic that leaves much to be desired.

I fear the most for stomach and back sleepers, as convoluted foam in the core can create too much sinkage, creating improper spinal alignment.

Side sleepers are likely to find the support dynamic better, as the higher sinkage can help better align the spine.

Even so, support isn’t merely a matter of support alone. Pressure relief also impacts whether a mattress feels supportive. Put simply, if you cannot stay in the same supportive positions due to pressure points you are likely to be frequently changing positions.

Overall, I am just extremely disappointed with the support dynamic, as shown in the table below.

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

There is a very narrow window of sleepers who may actually find this mattress to be comfortable.

Design

The Novaform ComfortGrande is a 13″ thick memory foam mattress with a medium feel (a firmness of 5 out of 10).

It is designed as a budget-friendly mattress with a simple memory foam design and a price point that is less than half the price of the average memory foam mattress.

Materials

This mattress has three main layers that make up the total mattress thickness. From top to bottom, the three layers include:

• 3.0” memory foam
• 2.5” poly foam
• 7.5” support foam

According to the manufacturer and Costco’s website site, this mattress is supposed to be 14″ thick, but we measured it right at 13″ during our tests. In general, there are just a lot of inconsistencies with the ComfortGrande.

Some portions of the mattress are as short as 12.5”, others as tall as 13.25”. However, there is no place on the mattress that is anywhere close to the 14.0” it’s supposed to be.

The foams really struggled to rebound back to shape after coming out of the box. The cover is also extremely loose, indicating to me that the manufacturer would normally expect this mattress to recover far larger than what we experienced here.

This can happen on occasions where the foam quality isn’t great and/or the mattress was in the box too long, which can damage the foam.

Material Quality

In terms of foam quality, these foams all seem pretty basic to me, which is about what I’d expect at this price point.

What concerns me the most is that this mattress was manufactured on September 27, 2023. I ordered it on January 11, 2024 and it was delivered on January 15, 2024.

There is no reason to think that it wasn’t immediately boxed after manufacturing, which means it likley spent 110 days compressed in a box.

Most mattress brands and manufacturers I talk to consider 30 days to be the most time any mattress should be compressed in a box before damage may start to occur.

Due to the manufacturing date, lack of foam recovery, and cover looseness, I am confident in my belief that these foams and the mattress have been significantly damaged as a result of being compressed in the box for too long.

The Cover

This mattress has a plush, quilted cover. It is soft to the touch and breathable, but not really anything special.

The Novaform website claims the cover has an “updated fiber blend” that helps with heat retention. However, during our tests that fiber blend did not seem to make a significant positive impact.

The Comfort Layer

The comfort layer includes a 3.0″ gel memory foam (blue) followed by a convoluted 2.5″ convoluted transitional poly foam (white).

Both of these layers work together to help provide comfort and supportive contours to the sleeper laying on this mattress.

The Support Layer

The support layer is a 7.5″ high-density support foam. This layer is very firm to the touch and designed to support the layers above.

Overall, this three-foam construction is fairly standard for all-foam mattresses and not really anything unexpected.

Product Evolution

The ComfortGrande mattress by Novaform has been distributed by Costco since 2018. Since its release, there have been no notable changes made to the mattress.

Other Mattresses to Consider

Not sure if the Novaform ComfortGrande is the right pick for you? Check out these three other top-rated memory foam mattresses for high-performing alternatives you may want to consider.

Frequently Asked Questions

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