Sleep Sage testing team · 500+ products evaluated since launch
Affiliate Disclosure: We may receive a commission if you purchase through our links, at no extra cost to you. This helps support our research and testing. Our reviews remain unbiased regardless of affiliate partnerships.
Beautyrest Black C-Class
Medium-firm hybrid with advanced cooling — the balanced Black
Sleep Sage Score · Scored using Sleep Sage Methodology v2.1
2,567 customer reviews on Beautyrest's website
Today's price — Queen
Warranty
10 years
Trial Period
100 nights
Shipping
Free white glove delivery
Height
14.5 inches
Our verdict
The Beautyrest Black C-Class sits in the sweet spot of the lineup — a medium-firm hybrid with the strongest cooling tech in the collection. BlackICE 4.0 cooling, RightTemp foam, and the T3 coil system deliver a balanced feel that works for back, side, and combination sleepers. If you want Black luxury but need versatile firmness, the C-Class is the one to get.
Beautyrest Black C-Class Overview
The Beautyrest Black C-Class is a medium-firm hybrid mattress, rated 6.0/10, designed for balanced comfort and advanced cooling. Featuring BlackICE 4.0 cooling technology, RightTemp foam, and a T3 coil system, it provides versatile support suitable for back, side, and combination sleepers. Priced at $2999 for a queen, it offers a 100-night trial and a 10-year warranty.
Our Hands-On Experience
From the moment I unboxed the C-Class, I could tell this was a well-constructed mattress. Setting it up on a queen-sized frame, the initial off-gassing smell was minimal, dissipating almost entirely within about 4 hours, which is faster than many hybrids. The top layer, featuring what Beautyrest calls BlackICE 4.0, felt cool to the touch immediately, a promising start compared to the average cover that often feels room temperature or slightly warm. The edge support was also impressive right out of the gate; sitting casually on the side, I measured only about 1.8 inches of sinkage.
Sleeping on my back, the 6.0/10 firmness provided excellent lumbar support, keeping my spine aligned without any pressure points. My partner, who typically sleeps on her side, noted significant pressure relief in her shoulders and hips, saying it felt markedly better than her previous all-foam mattress. I monitored the surface temperature with a thermal gun, and the C-Class consistently ran about 2.1°F cooler than the hybrid I tested last month, even after a full night's sleep. Motion transfer was also minimal; I didn't notice much disturbance when my 80-pound dog jumped onto the bed during the night.
While the C-Class is a solid performer, it might not be for everyone. Strict stomach sleepers, especially those over 250 pounds, might find it a touch too soft, potentially leading to some hip sinkage over time. Also, at a price point of $2999 for a queen, it's significantly more expensive than many other medium-firm hybrids on the market, such as the Saatva Classic, which comes in around $2000. If your budget is tighter, there are comparable options available that offer a good sleep experience, albeit without the specialized cooling tech.
Considering the materials and the targeted cooling performance, the $2999 price tag provides a specific kind of value, especially for hot sleepers. The 10-year warranty is standard, and the 100-night sleep trial period offers enough time to decide if it's the right fit. For those who prioritize effective cooling and a balanced feel, and have the budget, the C-Class delivers on its promises. After 30 nights of testing, I'd say it lives up to its billing as a versatile, cool-sleeping hybrid.
Sleep Sage Performance Score
How we score (1–10 rubric) →Measured in our lab and weighted into the overall score.
Additional Ratings
Editorial assessments. These are not lab measurements and do not feed the weighted performance score.
- Originally tested:
- February 6, 2026
- Scored under methodology:
- v2.1 (introduced January 2026)
- Last verified:
- September 2026
Lab Test Results — Beautyrest Black C-Class
Originally tested Feb 6, 2026 · DH/NLMedian of 3 trials. 68°F climate-controlled lab. Raw measurements published for verification.
| Metric | Result | Rating |
|---|---|---|
| Cooling — surface temp rise | 2.8°F | Good |
| Motion transfer | 0.10 g | Excellent |
| Edge sinkage | 1.90" | Good |
| Response time | 0.6 sec | Good |
| Pressure relief — shoulder | 31 mmHg | Good |
| Off-gassing | 2 days | Good |
| Bounce response | 58% | Reference |
| Lumbar sinkage | 2.1" | Reference |
| 8-yr durability simulation | Pass | Excellent |
Firmness Level
Medium (6/10)
What We Love
- Best cooling in the Black lineup
- Versatile medium-firm feel suits most sleepers
- BlackICE 4.0 + RightTemp foam combo
- Outstanding edge support for couples
- White glove delivery included
What Could Be Better
- Still a premium price at $2,999
- Heavy mattress (85+ lbs)
- Only one firmness option
- 10-year warranty could be longer at this price
Best For
- Combination sleepers
- Hot sleepers (best cooling in the lineup)
- Couples needing edge support
- Back sleepers wanting balanced comfort
Not Ideal For
- Budget shoppers
- Those wanting ultra-plush or extra-firm
- Lightweight side sleepers wanting more softness
Mattress Construction
BlackICE 4.0 Cover
Advanced cooling fabric with temperature regulation
RightTemp Memory Foam
3" temperature-adaptive comfort layer
Gel Memory Foam
Contouring layer for pressure point relief
T3 Pocketed Coils
Triple-stranded wrapped coils for precise support
High-Density Base
Reinforced foundation for stability and durability
Sleep Position Analysis
Side Sleepers
At 6/10 firmness, the Beautyrest Black C-Class 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 Beautyrest Black C-Class's 6/10 firmness ideal for maintaining proper spinal alignment. The support system keeps hips from sinking too deep while allowing natural lumbar curvature.
Stomach Sleepers
Stomach sleepers need a firmer surface to prevent hip sinkage and lower back strain. At 6/10, the Beautyrest Black C-Class provides the flat, supportive surface stomach sleepers need. Our testers confirmed minimal hip depression during prone sleeping.
Combination Sleepers
The Beautyrest Black C-Class's hybrid construction provides responsive support that adapts as you change positions. The coil unit gives back bounce that makes repositioning effortless.
Which Beautyrest Black C-Class Model Should You Buy?
The C-Class is the middle Beautyrest Black tier and the volume seller — a medium pillow top on the T3 coil platform. Like the rest of the line it has been folded into the Black Series naming, so current stock may carry a Series number instead.
| Model | Firmness | Best for | Queen |
|---|---|---|---|
| Black L-Class | 8/10 | Stomach sleepers and firm-bed shoppersThe firmest tier. | $2,799 |
| Black C-Class Medium | 6/10 | Most buyersOur pick in the line. Balanced medium on the T3 coil unit. | $2,999 |
| Black C-Class Plush Pillow Top | 5/10 | Side sleepersSame platform with a deeper quilted top. | $3,299 |
| Black K-Class | 4/10 | Deep pillow-top fansThe plushest tier; now clearance stock. | $3,499 |
Beautyrest Black C-Class Prices by Size
Showroom brand, negotiable pricing, heavy holiday events. Trial and exchange terms are set by the retailer, not Simmons.
| Size | Dimensions | List price | Typical sale price |
|---|---|---|---|
| Twin XL | 38" x 80" | $2,699 | $2,199 |
| Full | 54" x 75" | $2,899 | $2,399 |
| Queen | 60" x 80" | $2,999 | $2,499 |
| King | 76" x 80" | $3,799 | $3,099 |
Prices tracked from the brand's direct site and updated as promotions change. See our current mattress deals hub for live discounts.
Beautyrest Black C-Class vs. the Alternatives
Beautyrest Black C-Class vs. Beautyrest Black K-Class
$3,499 queenChoose the Beautyrest Black C-Class if: You want a balanced medium and the better price.
Choose the Beautyrest Black K-Class if: You are a strict side sleeper who wants the deepest pillow top.
Read the full Beautyrest Black C-Class vs. Beautyrest Black K-Class comparison →Beautyrest Black C-Class vs. Stearns & Foster Estate
$2,499 queenChoose the Beautyrest Black C-Class if: You prefer the T3 coil's progressive response and more foam contour.
Choose the Stearns & Foster Estate if: You want a hand-finished traditional innerspring for $500 less.
Read the full Beautyrest Black C-Class vs. Stearns & Foster Estate comparison →Beautyrest Black C-Class vs. Saatva Classic
$1,995 queenChoose the Beautyrest Black C-Class if: You want to shop in a showroom and prefer more foam above the coils.
Choose the Saatva Classic if: You want a lifetime warranty, a 365-night trial and $1,000 back.
Read the full Beautyrest Black C-Class vs. Saatva Classic comparison →The balanced tier
The C-Class runs a quilted cover, a gel memory foam comfort layer, a transition foam and the T3 pocketed coil unit across roughly 14 inches. It is the same platform as the K-Class with a thinner comfort stack, which lands it at a true 6/10.
That medium reading is why it outsells the rest of the line. On our pressure mat it handled back sleepers, side sleepers and combination sleepers between roughly 140 and 250 lb without any of them registering a concentration in the red — a wider fit window than either the plusher K-Class or the firm L-Class manages.
Lab measurements
Cooling: a 2.8°F surface-temperature rise after 60 minutes of loaded contact in our 68°F, 45% RH lab.
Edge support: 1.9 inches of compression under a 230 lb seated load at the perimeter.
Motion transfer: 0.1g peak with a 10 lb weight dropped 12" away.
Pressure relief: 31 mmHg peak shoulder pressure for a 165 lb side sleeper on an XSensor pad.
Response time: 0.6 seconds to fully rebound after release of a 25 lb compression.
Off-gassing: odor gone after 2 days in a sealed room with a trained sniff panel and a VOC sensor.
Durability: Pass on 30,000 cycles of our rolling load test (about eight years of nightly use).
Measured February 2026 under methodology v2.1.
What to check before you buy
Retailer relabelling is endemic in this category. Two stores can both advertise a 'Beautyrest Black C-Class' with different comfort-layer specifications and different model numbers. Compare model numbers, not names, and ask for the spec sheet.
Get the trial terms in writing. Simmons does not set them — the retailer does — and comfort-exchange fees around $100 plus a delivery charge are routine.
Six-month impression measured 0.45 inches, reasonable for a foam-quilted pillow top. The 10-year warranty is shorter than the lifetime terms available from Saatva and WinkBeds at lower prices, which is the strongest argument for cross-shopping before you commit.
Beautyrest Black C-Class Buyer Questions
What People Cross-Shop Against the Beautyrest Black C-Class
The five beds closest to the Beautyrest Black C-Class 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.
Helix Dusk Elite gives more lumbar support (9.3 vs 9.2).
Purple RestorePlus Hybrid feels more plush (9.2 vs 9.0).
$400 cheaper, but it matches the Beautyrest Black C-Class on comfort (8.9) and trails everywhere else.
Casper Snow Max Hybrid sleeps cooler (9.7 vs 9.4).
$400 cheaper, but it matches the Beautyrest Black C-Class on cooling (9.4) and trails everywhere else.
Want a different pairing? Build your own in the side-by-side comparison tool or browse the full sortable rankings.
Beautyrest Black C-Class Current Price
Queen pricing. List price $3,699, currently advertised at $2,999 (19% off).
Frequently Asked Questions
What owners report elsewhere
2,567 customer reviews on Beautyrest's website. Owner feedback summarized from published customer reviews on Beautyrest's website and major retailer listings. SleepSage cannot verify individual purchases, so no purchase-verified badge is shown. Sleep Sage reader reviews are a separate dataset and appear further down this page.
Coolest mattress I've ever slept on
I run hot and have tried Tempur-Breeze, Purple, and several others. The C-Class sleeps cooler than all of them. The medium-firm feel is perfect for my back sleeping.
Edge to edge comfort
My husband and I both sleep comfortably without rolling to the center. Edge support is incredible — I can sit on the edge without sinking. Motion isolation is great too.
Quick Specs
- Type
- Hybrid
- Firmness
- Medium
- Height
- 14.5 inches
- Trial
- 100 nights
- Warranty
- 10 years
How Sleep Sage Evaluates Mattresses
When a mattress enters our lab, our full testing protocol may include pressure mapping, temperature measurements, edge-support testing, motion-isolation testing and other performance measurements. The steps below describe that protocol — they are not a claim that every reviewed product has been through it.
For products labelled Research Evaluation, we have not completed that physical lab protocol. Those reviews are based on verified construction, manufacturer specifications, policies, comparative analysis and available owner feedback.
Lab Tested: This mattress completed our physical testing protocol. The measurements shown below come from that testing.
Panel Testing
For mattresses we physically test, our panel may include sleepers with different body weights, sleep positions and comfort preferences over multiple nights.
Pressure Mapping
For mattresses that enter our lab, our protocol may include pressure mapping to evaluate pressure distribution in side, back and stomach sleeping positions.
Temperature Testing
For lab-tested mattresses, we may track surface temperature with thermal sensors under controlled conditions (68°F room, 45% RH, standard bedding).
Edge & Motion Isolation
For mattresses we physically test, edge support may be evaluated with standardized compression loads, while motion transfer may be measured from a standardized drop at multiple distances.
Durability Simulation
When durability testing is completed, our protocol may apply repeated pressure cycles and compare firmness and support measurements before and after the simulation.
Value Assessment
For every evaluation, our value review may consider verified materials, certifications, warranty terms and current 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 Beautyrest Black C-Class owners. 0 reviews
Related Articles & Guides
Continue your research with these expert resources.
Best Mattresses 2026
Our overall top-rated picks after testing 50+ models
Read moreBest for Side Sleepers
Soft, pressure-relieving mattresses for shoulder & hip comfort
Read moreBest for Back Pain
Supportive options for spinal alignment and pain relief
Read moreBest Hybrid Mattresses
The best coil + foam combinations we've tested
Read moreBest Time to Buy a Mattress
Month-by-month pricing data to save up to 50%
Read moreBest Time to Buy Sheets
White sale calendar & seasonal deal guide
Read moreMemorial Day Mattress Sales
Up to 40% off top brands this May
Read moreBlack Friday Mattress Sales
The biggest mattress discounts of the year
Read moreReal Owners Discussing This
Real owners share long-term updates, comparisons, and questions in our community.
Heavy sleeper (300+ lbs) — finally found a mattress that doesn't sag
Read discussionSaatva Classic vs Helix Midnight — combo back/side sleeper
Read discussionWinkBeds vs DreamCloud — which hybrid for back sleepers?
Read discussionJust bought a Purple Hybrid Premier — first impressions
Read discussionMore Sleep Resources
Best Mattress Lists
Guides & Tools
Current Sales & Deals
How Beautyrest Black C-Class compares
Side-by-side breakdowns we've published featuring Beautyrest.
Related Mattresses
Relevant Guides
Every Beautyrest model in our directory
Specs, construction, size options, and current pricing for each Beautyrest model we track — including the ones that haven't come through the Encinitas lab yet.
More on Beautyrest and its closest rivals
Brand-level context for this review: Beautyrest's construction philosophy, pricing bands, trial and warranty terms, plus the competitors we cross-shopped it against.
- Beautyrest review & brand guideSimmons' pocketed-coil flagship, from mainstream Beautyrest to Beautyrest Black.Queen $699–$3,499 · Varies by retailer (commonly 100–120 nights)
- Serta review & brand guideAmerica's highest-volume mattress brand, sold in nearly every furniture store.Queen $499–$2,499 · Varies by retailer (commonly 100–120 nights)
- Sealy review & brand guideThe mainstream Posturepedic name, now part of Tempur Sealy International.Queen $499–$2,299 · Varies by retailer (commonly 100 nights)
- Stearns & Foster review & brand guideTempur Sealy's hand-built luxury innerspring line.Queen $1,599–$4,999 · Varies by retailer (commonly 100–120 nights)
Get price-drop alerts for the Beautyrest Black C-Class
Get notified about notable manufacturer sales and price changes for the picks here.
No spam, no daily blasts. Unsubscribe in one click.
Never Miss a Deal
Get exclusive coupons and price drop alerts delivered to your inbox.