The Novaform ComfortGrande Plus is a budget-friendly mattress available at Costco (U.S.). This all-foam mattress utilizes polyfoam for its support and transition layers, complemented by a memory foam upper comfort layer. The upper comfort layer is made of 'EVENcor GelPLUS memory foam', which is marketed as being more cooling.
Our Verdict
-
Light Weight
-
Average Weight
-
Heavy Weight
The Novaform ComfortGrande Plus is a 'Medium-Firm' mattress best-suited for heavier side sleepers. It offers great body conformity for people in that weight category, so your shoulder will sink in enough to relieve pressure. It's also decently supportive. It's not a bad option for average side sleepers either, as it offers satisfactory body conformity. However, it's not suitable for lighter side sleepers, who won't compress it enough for comfortable side sleeping.
Plush upper layers help with pressure relief.
Decent body conformity for average people.
Great body conformity for heavier people.
Poor body conformity for lighter people.
-
Light Weight
-
Average Weight
-
Heavy Weight
The Novaform ComfortGrande Plus is a decent option for average and heavier back sleepers. It offers satisfactory support for people in those weight categories, so when you're sleeping on your back, your hips stay mostly in line with the rest of your body. It also offers good support for lighter individuals, making it suitable for lighter back sleepers. However, you may want something with better pressure relief if you're a lighter person.
Good support for lighter people.
Decent support for average and heavier people.
-
Light Weight
-
Average Weight
-
Heavy Weight
The Novaform ComfortGrande Plus is a decent choice for most stomach sleepers. It has good support for lighter people, which helps keep your spine aligned when sleeping on your stomach. It also offers decent support for people in the average and heavier weight categories, so your hips won't sink in very far compared to the rest of your body. That said, while it's a reasonable option, you might ideally want a more supportive mattress for stomach sleeping.
Good support for lighter people.
Decent support for average and heavier people.
The Novaform ComfortGrande Plus is a moderately durable mattress. The transition layer is made of high-quality polyfoam, which helps prevent sagging for longer compared to good-quality and low-quality foams. The other layers, including the memory foam upper comfort layer and polyfoam support layer, are just dense enough to be considered of good quality.
Uses only good-quality foams.
The Novaform ComfortGrande Plus provides good pressure relief for individuals who weigh more. If you're in the heavier weight category, you'll compress it enough for comfortable side sleeping. It also offers decent body conformity for average people. However, it offers significantly worse pressure relief for lighter individuals, making it unsuitable for lighter side sleepers. Additionally, its upper comfort layers don't contour closely around your body, resulting in a less hugging feel. That said, your whole body will sink slightly into the upper layers, which helps relieve pressure, especially in lighter areas like your knees.
Plush upper layers help with pressure relief.
Decent body conformity for average people.
Great body conformity for heavier people.
Poor body conformity for lighter people.
The Novaform ComfortGrande Plus offers good support for lighter people. The heavier parts of your body won't sink in very far compared to the rest of your body, making it well-suited for back and stomach sleeping. It also offers decent support for people in the average weight category and above. While some firm mattresses offer better support, this one will still help keep your spine mostly aligned when you sleep on your back or stomach.
Good support for lighter people.
Decent support for average and heavier people.
The Novaform ComfortGrande Plus has good cooling. It doesn't feel warm when you first get in bed, and dissipates heat well all night. While it's not quite cooling enough for habitually hot sleepers, it won't make most people feel overheated.
Will keep most sleepers cool.
The Novaform ComfortGrande Plus boasts excellent motion dissipation performance, making it a suitable option for light sleepers and those sharing a bed with a partner. Its all-foam design absorbs motion, and you'll only feel bigger movements near the source. Motion dissipates quickly, so you'll feel the initial shock but not like you bounce around whenever someone moves.
Fantastic motion dissipation, so movements aren't likely to wake you.
The Novaform ComfortGrande Plus has adequate responsiveness. This mattress features a memory foam upper comfort layer that slowly recovers its shape after compression. This helps create a hugging feeling, but can also make you feel stuck in place, especially because it's not very bouncy either.
Slow responsiveness creates a sluggish feel.
Performance Usages
Changelog
- Updated Mar 09, 2026: We converted this review to Our Verdict section to clearly show the suitability of a mattress for your weight and sleeping position.
-
Updated Feb 19, 2026:
We added a link to the Silk & Snow Mattress in the Cooling box for hot sleepers who need better cooling.
-
Updated Dec 12, 2025:
We rewrote portions of the review to align with Test Bench 1.1, including adding text to the new test boxes and for the newly added verdicts. We also modified some of the side-by-side comparisons.
- Updated Dec 12, 2025: We converted this review to Test Bench 1.1. We've added new tests, including Body Conformity, Support, and Comfort Layers Envelopment, and also added scoring to the Bounciness test. Our usage scores have also changed, with new usages 'Side Sleeping,' 'Back Sleeping,' and 'Stomach Sleeping' replacing the 'Sleeping' verdict. We've also added 'Pressure Relief' and 'Support' performance usages. You can find more details in the full changelog.
Check Price
Differences Between Sizes And Variants
The Novaform ComfortGrande Plus comes in Twin, Full, Queen, King, and California King sizes. We tested the 'Queen' variant, and you can see a picture of our unit's label here. Our results are only valid for that variant.
This mattress has been discontinued and replaced with the Novaform ComfortGrande Advanced, which uses a different type of memory foam ('EVENcor GelMAX') and may perform differently.
If you have experience with the Novaform ComfortGrande Plus or another variant, we invite you to share your experience in the comments.
Popular Mattress Comparisons
The Novaform ComfortGrande Plus is a medium-firm mattress with a medium-firm feel. Compared to similar mattresses in the same price range, such as the Nectar Classic and Zinus Original Green Tea 2024, it offers better cooling and motion isolation. All of its foam layers are made from good-quality foam, which sets it apart from other budget-friendly mattresses. However, if you like the feel of memory foam but want a livelier mattress that allows for easier movement, you might prefer a hybrid mattress with memory foam, such as the Nectar Classic Hybrid.
If you're looking for a recommendation, check out the best mattresses.
The Novaform ComfortGrande Plus is generally superior to the Novaform Serafina Pearl for most individuals. The ComfortGrande offers improved motion dissipation and edge support, with comparable cooling performance. That said, the Serafina has a more responsive feel, making it easier to move around in your sleep.
The medium Casper Cooling Select is a better choice for most people than the medium-firm Novaform ComfortGrande Plus. The Casper offers a little more support and body conformity, making it more comfortable for a range of sleepers, though neither is a good choice for lighter side sleepers. The Casper is also a little more cooling and a lot more responsive, making it easier to change sleeping positions. On the other hand, the Novaform is better at isolating motion, so you may still prefer it if you or your sleeping partner tends to toss and turn.
You might prefer either the Purple Mattress or the Novaform ComfortGrande Plus. Both are medium-firm and best suited for light and average back and stomach sleepers. The Novaform uses memory foam, so it contours but moves slowly. It offers better motion isolation, making it much better for sleeping with a partner. The Purple is very responsive, so you never feel stuck in place. It stands out for its fantastic cooling and is a much better option for hot sleepers.
The Novaform ComfortGrande Plus is better than the Zinus Original Green Tea 2024. The Novaform is a budget-friendly all-foam mattress with much better cooling. It's also more responsive, so you're less likely to feel stuck in place, and it has even better motion isolation, allowing you to feel your partner's movements less noticeably. The Novaform also offers better edge support, which makes it easier to get in and out of bed. The Zinus is a cheaper option, so you might prefer it for that reason.
Test Results
for pictures & test results
for pictures & test results
for pictures & test results
for pictures & test results
for pictures & test results
for pictures & test results
for pictures & test results
for pictures & test results
for videos & test results
