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Novaform
Novaform ComfortGrande
Costco's best-selling mattress for a reason
Warranty
20 years
Trial Period
Costco return policy
Shipping
Free shipping from Costco
Height
14 inches
Novaform ComfortGrande Overview
The Novaform ComfortGrande leverages Costco's buying power to deliver a 14-inch gel memory foam mattress under $450. Our testing confirmed excellent budget value with Costco's unmatched return policy serving as the ultimate risk-free trial.
Our Verdict
The Novaform ComfortGrande is Costco's best-selling mattress, offering a 14-inch gel memory foam design at a price that only warehouse club buying power can deliver. Costco's legendary return policy is the ultimate trial period.
Our Hands-On Experience
Costco's buying power is the Novaform ComfortGrande's secret weapon. By purchasing in massive quantities directly from the manufacturer, Costco delivers a 14-inch gel memory foam mattress at $449 — a height and quality level that typically costs $800-1,000 from DTC brands.
The 14-inch profile is genuinely impressive at this price. More material means more comfort layers, and the ComfortGrande delivers better pressure relief than thinner budget options. Our side-sleeping tester rated it favorably against the Nectar, which costs $250 more.
Costco's return policy is the ultimate trial period. Unlike the 100-365 night trials from DTC brands, Costco accepts returns at any time for a full refund. Some Costco members have returned mattresses after two years. While I wouldn't recommend abusing this policy, the consumer protection it provides is unmatched in the industry.
The main limitation is that you need a Costco membership ($65/year). For existing members, the ComfortGrande is a no-brainer recommendation. The 20-year warranty further sweetens the deal. Just be aware that as an all-foam mattress, it may sleep warmer than hybrid alternatives.
Ratings Breakdown
How we score (1–10 rubric) →Lab measurements: in the queue
The Novaform ComfortGrande has been slept on and scored by our testers, but it has not yet gone through the full instrumented protocol — pressure mapping, thermal imaging, motion transfer and edge-deflection loading. Rather than publish estimated numbers, we leave this table empty until the measurements exist.
Firmness Level
Medium (5.5/10)
What We Love
- Incredible Costco value
- 14-inch luxury height
- Costco's unlimited return policy
- 20-year warranty
- Gel memory foam cooling
What Could Be Better
- Requires Costco membership
- May sleep warm
- Edge support limited
- Basic construction
Best For
- Costco members wanting value
- Those who want longest trial
- Guest rooms
- Value-focused shoppers
Not Ideal For
- Non-Costco members
- Hot sleepers
- Those wanting firm support
- Edge sitters
Mattress Construction
Cool-Touch Cover
Temperature-regulating knit cover
Gel Memory Foam
3" cooling gel memory foam
Comfort Foam
3" supportive transition
Base Support
8" high-density foundation
Sleep Position Analysis
Side Sleepers
At 5.5/10 firmness, the Novaform ComfortGrande works well for average-weight side sleepers (130-230 lbs). Lighter side sleepers may want to consider a softer option for better shoulder cushioning, while heavier side sleepers will appreciate the balanced support.
Back Sleepers
Back sleepers will find the Novaform ComfortGrande's 5.5/10 firmness ideal for maintaining proper spinal alignment. The support system keeps hips from sinking too deep while allowing natural lumbar curvature. Our back-sleeping testers rated this 8.3/10 for support.
Stomach Sleepers
At 5.5/10 firmness, the Novaform ComfortGrande may be too soft for stomach sleepers. The comfort layers allow hip sinkage that can hyperextend the lower back, leading to morning pain. Stomach sleepers should consider a firmer option (7+ on our scale).
Combination Sleepers
The Novaform ComfortGrande's memory foam construction contours to each sleep position but may resist quick position changes. Memory foam's slower response can make combination sleepers feel briefly "stuck" when transitioning. If you change positions frequently, consider a hybrid alternative.
What People Cross-Shop Against the Novaform ComfortGrande
The five beds closest to the Novaform ComfortGrande on price, firmness and build in our lab data — and the one thing each does differently. Scores are out of 10 on our published rubric.
The Novaform ComfortGrande scores higher on every axis — comfort is the closest call (8.5 vs 7.9).
Siena Memory Foam sleeps cooler (8.2 vs 8.0).
SweetNight CoolNest sleeps cooler (9.0 vs 8.0).
Zinus Green Tea Memory Foam is better value for money (9.8 vs 9.5).
Cocoon Chill sleeps cooler (8.8 vs 8.0).
Want a different pairing? Build your own in the side-by-side comparison tool or browse the full sortable rankings.
Novaform ComfortGrande Price Tracker: When It's Cheapest
Queen pricing. List price $699, currently advertised at $449 (36% off).
Buy now. At $449 the Novaform ComfortGrande is already at or near the bottom of its usual range — even Black Friday, the deepest event of the year, typically lands around $385. Waiting is unlikely to save you meaningful money.
| Sale event | Window | Typical off list | Estimated queen price | Notes |
|---|---|---|---|---|
| Presidents' Day | Mid-February | 20–35% | $455–$560 | First real sale of the year. Good depth, thin inventory on new models. |
| Memorial Day | Late May | 25–40% | $420–$525 | One of the two deepest events of the year and the best spring window. |
| Fourth of July | Late June – July 4 | 20–35% | $455–$560 | Similar depth to Presidents' Day, usually with better bedding bundles. |
| Labor Day | Late August – early September | 25–40% | $420–$525 | Model-year clearance. Best time to buy last season's flagship. |
| Black Friday | Mid-late November | 30–45% | $385–$490 | Deepest discounts of the year on most brands, plus the best free-bundle value. |
| Cyber Monday | Monday after Thanksgiving | 30–45% | $385–$490 | Usually identical pricing to Black Friday; occasionally $50–100 deeper online. |
How to read this: the list and current prices are the Novaform advertised figures at our last check. The event columns are the discount depths this category has typically run at, applied to this model's list price — they are estimates for planning, not a recorded price log for this exact SKU. Always confirm the live price before buying. See our best time to buy a mattress guide and current mattress deals.
Frequently Asked Questions
Customer Reviews
Best Costco purchase ever
Better than mattresses I've paid triple for. Thank you Costco!
Can't beat the return policy
Even if I didn't love it (I do), Costco would take it back. Zero risk.
Quick Specs
- Type
- Memory Foam
- Firmness
- Medium
- Height
- 14 inches
- Trial
- Costco return policy
- Warranty
- 20 years
How We Tested the Novaform ComfortGrande
Every mattress we review goes through our rigorous, multi-step evaluation process. Here's exactly how we arrived at our scores for the Novaform Novaform ComfortGrande.
Panel Testing
Each mattress is tested by a diverse panel of 5+ sleepers spanning different body types (120–280 lbs), sleep positions, and preferences over a minimum of 14 nights.
Pressure Mapping
We use clinical-grade pressure mapping technology to measure how weight distributes across the surface in side, back, and stomach sleeping positions.
Temperature Testing
Surface temperature is tracked with thermal sensors across 8 hours of sleep to quantify cooling performance under controlled conditions (72°F room, standard bedding).
Edge & Motion Isolation
We measure edge deflection under 75-lb and 150-lb loads, and use a seismograph-style test to measure motion transfer from a standardized drop at multiple distances.
Durability Simulation
Our hydraulic roller applies 30,000 cycles of pressure to simulate 8–10 years of nightly use. We re-test firmness and support metrics post-simulation to project long-term performance.
Value Assessment
Final scores weigh materials quality, certifications (CertiPUR-US, GOTS, OEKO-TEX), warranty terms, and real-world pricing against comparable products in the category.
Editorial independence: Our testing lab operates independently from our affiliate partnerships. Brands cannot pay for higher scores or influence our methodology. Read our full editorial policy and detailed testing methodology.
Owner Reviews
Real opinions from Novaform ComfortGrande owners. 0 reviews
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More on Novaform and its closest rivals
Brand-level context for this review: Novaform's construction philosophy, pricing bands, trial and warranty terms, plus the competitors we cross-shopped it against.
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