Novaform Mattress Review (2026)
Published: March 25, 2026
Alexandra Forest
Sleep Content Specialist
Our Rankings
Edge support and motion isolation are factored into our overall mattress ratings. These scores are shown in green (scores of 5.0+), yellow (3.0–4.9), or red (2.9 and below). Firmness, bounce, and cooling features are a matter of personal preference and aren’t part of our rating system, so these scores are shown in grey.
5.3 /10
7.3 /10
7.5 /10
2.9 /10
5.7 /10
Product Details
The Novaform ComfortGrande Plus Advanced mattress stands 14″ tall and has 3 foam layers, including a layer of gel memory foam infused with phase-change material. Perforations in the transition layer help improve airflow, and the quilted top cover is infused with antimicrobial protection. This cover isn’t removable or machine washable. You’ll need to spot-clean it in case of any spills or stains.
In third-party engineer testing (commissioned by us), Novaform ComfortGrande Plus Advanced earned a firmness score consistent with a medium feel. This firmness level is typically best for side and back sleepers, but may not be supportive enough for all sleepers. The mattress also earned very good scores for motion isolation and edge support, along with a very low bounce score.
In comparison, competing foam mattress Douglas Original has gel-infused foam and a machine-washable cooling cover, as well as open-cell foam layers. It has a medium-firm feel, which is ideal for all sleep positions. Douglas Original also earned higher edge support and motion isolation scores than Novaform ComfortGrande Plus Advanced. Douglas mattresses come with a free bedding bundle that includes a cotton sheet set, duvet cover, down alternative duvet, pillow(s), pillow protector(s), and a mattress protector.
Ideal For: Side Sleepers, Back Sleepers
You May Prefer
Douglas Original
Our Rating:
9.9 /10
Novaform Mattress Sizes & Prices
Prices are taken from mattress brand websites or third-party retailers and don’t account for current sales or promotions. We check these prices for accuracy on a monthly basis. Learn more >
Need a different mattress size? Consider Douglas.
Read Douglas Review
Delivery, Sleep Trial & Returns
The Novaform ComfortGrande Plus Advanced mattress is available through Costco’s website only, and is not available in-store. This means you’ll need a valid Costco membership to purchase it.
Costco offers free shipping and delivery service to online customers via UPS, including mattress placement, setup, and removal of packaging. Delivery will take 3–10 business days, including time taken to dispatch your order. The mattress arrives on your doorstep wrapped in plastic and rolled up inside a box.
READ MORE: How to unbox a mattress
Novaform mattresses sold through Costco do not have a sleep trial. However, Costco is known for its generous return policy that allows you to return the mattress for a full refund at any time, as long as it’s in good condition and it was purchased with your Costco card. If you decide to return the mattress, you can bring it back to the store yourself. You can also contact Costco to schedule a return pickup, but this may take several weeks to arrange.
Novaform ComfortGrande Plus Advanced comes with a 20-year limited warranty. In case of defects in manufacturing and workmanship, Novaform will offer one replacement during the warranty period for successful claims.
Get the mattress with a 365-night sleep trial.
Read Douglas Review
Novaform Mattress Construction
Novaform ComfortGrande Plus Advanced is 14″ tall with 3 foam layers, which work together to provide comfort and support. These layers are CertiPUR-US® certified.
- Layer 1: The top (comfort) layer is 3″ of EVENcor GelPlus™ memory foam with phase-change material, which is designed to keep you cool and contour around the shape of your body as you sleep.
- Layer 2: The middle (transition) layer is 3″ of support foam, designed with air channels to help dissipate heat and maintain airflow.
- Layer 3: The bottom (support) layer is 8″ of support foam. This high-density foam layer provides the mattress with stability and support.
Novaform ComfortGrande Plus has a quilted top cover for added comfort. It has a cool-to-the-touch feel and is treated with antimicrobial protection. The cover isn’t removable or machine washable, so any spills or stains will need to be spot-cleaned.
Get the Canadian-made mattress with a machine-washable cover.
Read Douglas Review
MattressReviews.ca commissions licensed third-party engineers and uses public data to rate mattresses on over 40 criteria.
This allows us to accurately rate and compare the performance of the mattresses reviewed on this website. Engineer independence and operating standards help ensure their results remain unbiased, valid, and reliable.
Each mattress was evaluated using the same strict mattress testing methodology to protect the overall integrity of the results. Foam and hybrid mattress test results are scored on separate scales to ensure fair contextual performance representation as much as possible. The full report has been given the official stamp of approval from an APEGA-certified engineer operating under a strict ethical code of conduct.
Mattress testing conducted outside of this professional standard poses a greater risk of validity errors or reviewer bias.
5.3 /10
Firmness
In third-party engineer testing (commissioned by us), Novaform ComfortGrande Plus Advanced had a deflection of 3.5″. This resulted in a firmness score of 5.3/10, which is consistent with a medium feel. Medium mattresses are good for side sleepers and some back sleepers seeking pressure-point relief. However, you might want a firmer feel if you are a stomach sleeper or have a heavier body type.
(Need a medium-firm mattress that fits all sleep styles? Check out Douglas Original with its firmness score of 6.7/10.)
READ MORE: What mattress firmness is right for you?
7.3 /10
Edge Support
A mattress with good edge support lets you sit on the edge of the bed or lie farther away from the middle without sliding off. In third-party engineer testing (commissioned by us), Novaform ComfortGrande Plus Advanced scored 7.3/10 for edge support. This is very good for a foam mattress.
(Looking for a mattress with an even higher edge support score? Try Douglas Original with its score of 7.8/10.)
7.5 /10
Motion Isolation
Mattresses with high motion isolation keep you from noticing your partner’s nighttime movements, which can help ensure a more restful night’s sleep. Foam mattresses tend to provide greater motion isolation than hybrid mattresses. Novaform ComfortGrande Plus Advanced earned a motion isolation score of 7.5/10. This is a very good score for a foam mattress.
(Want a mattress with greater motion isolation? Try Douglas Original with its higher score of 8.3/10.)
2.9 /10
Bounce
Bounce is a matter of personal preference. Higher bounce makes it easy to change sleep positions, while lower bounce ensures a more consistent surface. Foam mattresses are generally known for being less bouncy than hybrid mattresses. Novaform ComfortGrande Plus Advanced earned a bounce score of 2.9/10. This is a very low score for a foam mattress.
5.7 /10
Cooling Features
Novaform ComfortGrande Plus Advanced has several temperature control features that are designed to help keep you comfortable while you sleep. This mattress earns points for its:
- Quilted, cool-to-the-touch top cover for a cooler sleep surface
- Top layer of EVERcor GelPlus™ gel memory foam infused with phase-change material to allow for enhanced cooling and heat dissipation
- Air channels in the middle layer to permit airflow
In comparison, Douglas Original earned a higher cooling features score of 5.0/10. Douglas has ecoLight® cooling gel foam, breathable open-cell Elastex® foam, and a moisture-wicking cover made with Infinitex™ fibres. These similar cooling features also come with a free bedding bundle, all for just $799 for a queen size.
Read Douglas Review
Company Background
Novaform is owned by FXI Inc., which manufactures polyurethane foam products. Novaform partnered with Costco in 2016 to distribute its products, and has helped Costco to expand its influence in North American mattress retail. A limited range of Novaform products are available in Canada.
It’s important to consider a brand’s online reputation before you buy. Novaform isn’t listed on BBB and has an unclaimed Trustpilot page with no customer ratings or feedback. FXI has a BBB page, but it’s unrated and has no reviews. Costco, on the other hand, is listed on BBB with a rating of “C-” (unaccredited), with a customer review rating of just 1.14/5 stars. Costco is rated “Poor” on Trustpilot with 1.8/5 stars.
Pick the mattress brand that’s rated “Excellent” on Trustpilot.
Read Douglas Review
Frequently Asked Questions
Are Novaform mattresses good?
Novaform ComfortGrande Plus Advanced performed well in third-party engineer testing (commissioned by us), earning very good scores for edge support and motion isolation. It has several cooling features and comes with a 20-year warranty. However, it lacks common features like a machine-washable cover or a free bedding bundle. The mattress is exclusively available through the Costco website and requires a membership to purchase.
We recommend Douglas Original instead. It earned higher testing scores for edge support and motion isolation. Douglas comes with several cooling features and a machine-washable cover. You also get a 365-night sleep trial, a 20-year warranty, and a free bedding bundle. These features come at a similarly affordable price of $799 for a queen size.
Who makes Novaform mattresses for Costco?
Novaform mattresses are made by FXI Inc., a US manufacturer of polyurethane foam products. (Need a Canadian-made mattress? Consider Douglas Original.)
Where are Novaform mattresses made?
Novaform mattresses are made in the United States.
Do Novaform mattresses have fiberglass?
Novaform ComfortGrande Plus Advanced doesn’t contain fiberglass. As with any mattress, always read your mattress’s law label before trying to remove the cover.
READ MORE: Is fiberglass in a mattress dangerous?
How long does a Novaform mattress need to expand?
It can take up to 48 hours for a Novaform mattress to expand, according to the company’s website.
Is Costco recalling the Novaform mattress?
Yes, there was a product recall in 2023. FXI Inc. voluntarily recalled 48,000 ComfortGrande and Serafina mattresses sold at Costco. This was due to potential mould caused by certain packaging and storage practices before sale. Only one batch of mattresses was affected, and there haven’t been any recalls since.
What Novaform mattress alternatives should I consider?
We recommend Douglas Original as a Novaform mattress alternative. Douglas earned even higher scores for edge support and motion isolation in third-party engineer testing (commissioned by us). It has similar cooling features and a machine-washable cover. The mattress comes with a 365-night sleep trial, a 20-year warranty, and a free bedding bundle that includes a cotton sheet set, duvet cover, down alternative duvet, pillow(s), pillow protector(s), and a mattress protector—all for $799 for a queen size.
You May Prefer Our Top Pick 2026
Douglas Original
9.9/10
Made in
Best Mattress In a Box
Forbes, 2024
To spend under $700 for a queen-size mattress
A medium-firm feel that’s ideal for all sleep styles
