Illustration of a foam mattress cut away to show its typical layers — rendered artwork, not a product photo

Illustration · typical all-foam build

Novaform ComfortGrande Plus

Name: Novaform ComfortGrande Plus
Brand: Novaform
SKU: novaform-comfortgrande-plus

A medium all-foam mattress from Novaform: about 5.5/10 for firmness, converted from the brand's own firmness label. Scores highest for side sleepers: 73/100.

View at Costco

Retailer · costco.com · not an affiliate link

Match Score

Good match

Typical side sleeper, 160 lb · 14th of 26 ranked

Your weight, temperature and partner can move this a lot.

Get your full score

Firmness: Medium 5.5/10
Queen price: Not yet verified
Trial: Not yet verified
Warranty: Not yet verified

Match Score

Scored for the way people sleep.

The same engine as the quiz, run for a typical sleeper in each position. Reference sleeper: 160 lb, sleeps neither hot nor cold, sleeps alone, no stated firmness preference. Only the sleep position changes.

Model v0.2. Rank is among the mattresses with enough data to rank, for that same sleeper, as on the category pages. How scores work

Get your full score

Side sleeper
73/100
Good match · 14th of 26 ranked for this sleeper
Good match for a side sleeper: strongest on pressure relief and support & alignment.
Back sleeper
73/100
Good match · 23rd of 26 ranked for this sleeper
Good match for a back sleeper: strongest on support & alignment and pressure relief.
Stomach sleeper
66/100
Fair match · 25th of 26 ranked for this sleeper
Fair match for a stomach sleeper: strongest on pressure relief and motion isolation.
Combination sleeper
73/100
Good match · 23rd of 26 ranked for this sleeper
Good match for a combination sleeper: strongest on support & alignment and pressure relief.

Inside

Inspect the mattress.

A typical all-foam build, layer by layer. Select a layer to see what it does, which parts of Novaform's published materials list belong to it, and how that part of the bed scores.

Select a layer

Illustration of a typical all-foam build, not a teardown of the Novaform ComfortGrande Plus.

Layer 01 of 04

Cooling Cover

The fabric layer you lie on. It is often a quilted or knit panel; breathable weaves help move heat and moisture away from the body, which is one input to how warm a bed sleeps.

Mainly drives cooling.

From Novaform's materials list

Cooling Gel Memory Foam Plus Cool Touch Cover

Matched to this layer by component name. Thicknesses and densities aren't published.

Performance · Typical side sleeper, 160 lb

Cooling40/100
Estimated · no independent rating on file

Specifications

The specifications.

5 of 8 core specs on file

Source: Costco.com (opens in a new tab) — retailer product page, checked 25 Sep 2026.

Firmness: Medium 5.5/10; Converted from the brand's own firmness label. Medium (only firmness offered for this SKU) (manufacturer).
Construction: All-foam; 2 components listed on Costco.com. See them by layer above.
Height: 14 in
Queen price: Not yet verified; We couldn't confirm a Queen price on Costco.com, so none is shown.
Trial: Not yet verified; Page explicitly does not state trial length or warranty term ("For manufacturer warranty information, please contact us").
Warranty: Not yet verified
Cooling: Not yet rated; Manufacturer: Cool Touch Cover / Dual Cool Design (named on page, no lab-verified cooling metric)
Motion isolation: 7.5/10; Independent rating
Edge support: 6.5/10; Independent rating
Durability: 5.5/10; Independent rating

Still missing: trial length, warranty and Queen price — shown as “Not yet verified” rather than guessed.

Independent notes

What reviewers noted.

Sources

Sleep Foundation (opens in a new tab)

Our paraphrase, not quotes. A listed source is evidence we checked, not an endorsement of this site.

Drawbackdurability
Not likely to last more than six or seven years (rated 5.5/10).
Paraphrased from Sleep Foundation
Drawbackedge support
Iffy around the perimeter, weak but not unstable (rated 6.5/10).
Paraphrased from Sleep Foundation