In 2024 Beautyrest renamed its Black lines, and almost every review still online describes a mattress you can no longer find on Beautyrest’s own site. This Beautyrest Black mattress review names its subject exactly — the Series One Extra Firm, 13.5 inches, measured at 8/10 — and explains why the old names cannot simply be translated.
Updated · By SleepUnpacked Research Team
For back and stomach sleepers over 130 pounds, yes — it scored 8.5 to 9.5 in independent fit testing, rising further above 230 pounds, with outstanding edge support (9/10), effortless repositioning (9/10), and strong cooling (8.5/10). For two groups it is clearly the wrong bed: light side sleepers, who scored it 6/10 because an 8/10 surface barely yields at the shoulder, and couples with a restless partner, since motion isolation measured just 6/10 — weak at this price. Pressure relief (6.5/10) is the honest cost of the firm, shallow-contour design. Before comparing prices anywhere, confirm you are looking at this exact variant: roughly twenty mattresses share the Beautyrest Black name.
Series One is the entry tier of the current four-series Black collection, which runs to roughly twenty models across Series One, Two, Three, and Four. In 2024 Beautyrest replaced its former B, L, C, and K Line names with these series numbers, and the series are not direct renames of the old classes. Retailers and older reviews still use C-Class, L-Class, and K-Class. Results here apply to this variant only.
Beautyrest gel memory foam over Triple-Stranded Pocketed Coil Technology, under a cool-to-the-touch quilted cover with Sleep Climate Technology. A separate Black Hybrid Series One is sold alongside it, so check whether the listing you are reading says Hybrid.
Beautyrest sells this variant as Extra Firm and the independent lab measured 8 of 10, placing it at the firm end of the market. Series One also ships in Firm Pillow Top, Medium, Medium Pillow Top, Plush, and Plush Pillow Top — those feel materially different and none of the results here transfer to them.
Consistent across sizes on the tested variant. Height climbs sharply further up the collection — Series Four models run past 17 inches — so sheet and bedding fit is not transferable between series.
The independent reviewer recorded a $1,749–$2,899 range across sizes, above the direct queen price on the checked date. The mattress is also sold through Mattress Firm, Home Depot, Macy’s, and JC Penney, each at their own price, so a single figure is unreliable for this model.
That is the term when you buy directly from Beautyrest. Third-party retailers set their own trial lengths and conditions on the same mattress, so the decision window depends on where you buy rather than on what you buy.
Includes in-room setup and free removal of your old mattress on request, provided it is in sanitary condition. Not shipped to Alaska or Hawaii. Quick Ship is available on some sizes and locations, which shortens the wait.
Free shipping and returns when bought direct. Retailer return policies differ and may add fees or restocking terms, so read the policy of whichever store you actually buy from.
Shorter than the lifetime terms common among online rivals in this price range. As always, coverage turns on the written indentation threshold and on using proper support — read the terms before treating it as long-term protection.
Best-for and avoid-if guidance is Sleep Unpacked editorial analysis. Purchase terms can change; use the linked official source before ordering.
In 2024 Beautyrest replaced its B, L, C, and K Line names with Series One, Two, Three, and Four. It would be convenient if each class simply became a series, and a lot of coverage assumes exactly that. The evidence does not support it: industry documentation of the change records that the Series One models replaced the outgoing B-Class “although they don’t necessarily map directly to these models.” Beautyrest’s current collection page does not mention the class names at all, so there is nowhere official to look up an equivalence.
The practical consequence: if you are reading a review of a Beautyrest Black C-Class Medium or an L-Class Firm — and retailers still sell and review under those names — you cannot safely assume it describes any mattress in the current lineup. This review does not assert a mapping, because none is published and the available evidence says one would be wrong.
| Series | Count | What distinguishes it |
|---|---|---|
| Series OneReviewed here | 6 models | The entry tier: Extra Firm, Medium, and Plush in tight-top and pillow-top forms, on Triple-Stranded Pocketed Coil Technology. A separate Black Hybrid Series One sits alongside it. |
| Series Two | 5 models | Firm, Medium, and Plush across tight-top and pillow-top variations, above Series One on price and comfort-layer depth. |
| Series Three | 6 models | Extra Firm through Plush, with nanocoils added in the pillow-top models for a second layer of point support. |
| Series Four | 3 models | Firm, Medium, and Plush Summit Pillow Top only. Past 17 inches tall, with two full nanocoil layers — a different mattress class in every practical sense. |
Older coverage instead describes an eleven-model lineup split across K-Class, C-Class, and L-Class. Both vocabularies are still in active use — Beautyrest’s site uses one, much of the retail and review web uses the other — which is the single biggest reason shopping this brand is harder than it should be.
Each result is labeled by evidence type. A measurement is not converted into a 10-point rating, and an untested metric stays unscored.
Extra firm (8/10)
Genuinely firm, and the measurement agrees with Beautyrest’s own Extra Firm label. Expect to lie on top of this mattress rather than in it, which drives almost every other result below.
Sleep Foundation Test Lab6.5 / 10 test-lab rating
The weakest measured attribute. A thin gel-foam layer over a firm coil unit does little to cushion the shoulder and hip, which is a deliberate design choice rather than a defect — but it is the wrong choice for pressure-sensitive sleepers.
Sleep Foundation Test Lab8.5 / 10 test-lab rating
A real strength. Because you sink very little, far less of the body is enclosed by foam, and the pocketed coil unit moves air freely beneath the quilted cover.
Sleep Foundation Test Lab6 / 10 test-lab rating
Poor for the price. A firm surface with a shallow comfort layer transmits a partner’s movement rather than absorbing it — the clearest reason for light-sleeping couples to look elsewhere.
Sleep Foundation Test Lab9 / 10 ease-of-movement rating
Near the top of the scale. There is essentially no contour to climb out of, so changing position takes almost no effort — the flip side of the weak motion isolation.
Sleep Foundation Test Lab9 / 10 test-lab rating
Excellent, and the standout number on this mattress. The firm surface barely compresses under a seated load, so the full width stays usable for sleeping and for getting in and out.
Sleep Foundation Test LabNot reported for the current version
No published noise measurement was found for the tested Series One Extra Firm; no rating is assigned rather than carrying one across from another series in the collection.
Independent fit scores climb in every position as body weight increases, which is the opposite of what we found reviewing a plush specialty model recently. That is exactly what an 8/10 surface on a firm pocketed-coil unit should do: at lower body weight there is not enough load to engage the coils, so the bed feels like a platform, while at higher body weight the same build finally does its job. It makes this an unusually good option for heavier back and stomach sleepers, and a poor one for light side sleepers.
These fit calls interpret the independent lab's position-by-weight scores for the Series One Extra Firm specifically. Because firmness is the dominant variable here, a Plush or Pillow Top variant of the same series would produce a materially different table.
Tested 6 — the weakest cell on the mattress. An 8/10 surface yields very little at the shoulder and hip when there is not much body weight to compress it.
Tested 7; workable, though side sleepers who want a cradle rather than a platform will find this firm.
Tested 8. Higher load finally engages the coil unit, and the firm build starts working in the sleeper’s favour rather than against them.
Tested 7.5; well supported, though lighter back sleepers may find the surface harder than they need for comfort.
Tested 8.5 — firm pushback keeps the hips from dropping out of line with the shoulders.
Tested 9.5, among the strongest position-and-weight results recorded on this site.
Tested 7.5; a neutral spine is easy to hold, though the surface is firmer than many lighter stomach sleepers want under the ribs.
Tested 9 — a firm, shallow-contour surface is close to ideal for this position.
Tested 9.5. Stomach sleeping at higher body weight is where soft mattresses fail worst, and this build is the direct answer to that problem.
Repositioning is effortless at 9/10 ease of movement, but the firm surface is unforgiving during side-sleeping phases at low body weight.
Ease of movement measured 9/10 with almost no contour to climb out of, which suits sleepers who change position through the night.
Both ease of movement and the individual position scores are at their strongest in this band.
Fit calls are editorial interpretations of cited third-party testing, not clinical recommendations. Trial length and return terms depend on which retailer you buy from, so check them before relying on a trial to correct a poor fit.
A cool-to-the-touch quilted cover with Sleep Climate Technology sits over Beautyrest gel memory foam and a Triple-Stranded Pocketed Coil unit, at 13.5 inches. The comfort layer is deliberately thin, and nearly every measured result traces back to that one decision: excellent edge support and ease of movement because there is almost nothing to compress, strong cooling because little of the body is enclosed in foam, and weak pressure relief and motion isolation for exactly the same reason. Height climbs steeply further up the collection — Series Four models pass 17 inches with two nanocoil layers — so neither the feel nor the bedding fit carries across series.
Bought directly from Beautyrest this carries a 100-night trial, free White Glove delivery in two to four weeks with in-room setup, free old-mattress removal on request, and a 10-year limited warranty. The same mattress is also sold through Mattress Firm, Home Depot, Macy’s, and JC Penney, each setting its own price, trial length, and return terms. Confirm all four before comparing offers — on this model the retailer, not the mattress, decides most of what you are agreeing to.
Assumptions: nightly use, a proper supporting foundation, occasional rotation, and no liquid damage. This is directional material reasoning about a thin comfort layer over a firm pocketed-coil unit — not a failure probability, a service-life guarantee, or a review score.
With a thin comfort layer there is less foam to soften, so the quilted cover and the coil unit carry more of the wear. On firm innersprings the first noticeable change is usually surface flattening under the hips rather than a deep body impression.
Triple-Stranded Pocketed Coil Technology and a firm perimeter produced the mattress’s best measured result at 9/10 edge support. Independent assessment of materials quality came in at 7.5/10 — solid rather than exceptional.
No version-matched long-term measurements exist, and the 2024 renaming makes older long-term owner reports hard to attach to a current model with confidence. The 10-year limited warranty is the practical floor. Revise on a construction revision or a compatible retest.
The Beautyrest Black Series One Extra Firm — a 13.5-inch quilted pocketed-coil innerspring, measured at 8 out of 10 for firmness by an independent lab. It is the entry tier of the collection and the only variant with published instrumented results. Series One also ships in Firm Pillow Top, Medium, Medium Pillow Top, Plush, and Plush Pillow Top, and none of the measurements here transfer to those or to Series Two, Three, or Four.
In 2024 Beautyrest replaced its B, L, C, and K Line names with Series One, Two, Three, and Four. Critically, the series are not direct renames: industry coverage of the change notes that Series One replaced the outgoing B-Class models "although they don’t necessarily map directly to these models." Beautyrest’s own site no longer mentions the class names at all, while retailers and older reviews still use them. There is no published crosswalk, so a C-Class review cannot be safely applied to any current series.
Roughly twenty in the current collection: six in Series One, five in Series Two, six in Series Three, and three in Series Four, plus a parallel Black Hybrid line. Older coverage describes a different eleven-model lineup split across K-Class, C-Class, and L-Class. Both vocabularies are still in circulation, which is the single biggest source of confusion when shopping this brand.
Not the Extra Firm variant, if you are lighter. It scored 6 out of 10 for side sleepers under 130 pounds — the weakest result on the mattress — because an 8/10 surface gives very little at the shoulder and hip. Side sleepers over 230 pounds fared much better at 8/10. If you sleep on your side and want contouring, a Plush or Pillow Top variant is the one to look at, and its results would differ from everything reported here.
Only partly. Edge support measured 9 out of 10, so the full width of the mattress stays usable, which matters on a shared bed. But motion isolation measured just 6 out of 10 — weak for the price — because a firm surface with a shallow comfort layer passes a partner’s movement along rather than absorbing it. If one of you wakes easily, that is the number to weigh.
No version-matched long-term measurements exist, so this is a qualitative outlook. Independent assessment of materials quality came in at 7.5/10. The thin gel-foam comfort layer carries less load than on a plush mattress, so the pocketed coil unit and the quilted cover are the more likely places to show change first. Note the warranty is 10 years and limited, shorter than the lifetime terms several online rivals offer at this price.
Next Step:For your next decision step, review Beautyrest Black Series One specs, sizes & pricing.
Intro:For first-pass context, review best mattress for heavy sleepers.
Methods:For methods and material assumptions, review Westin Heavenly Bed mattress review.
Risk:For risk thresholds and failure conditions, review mattress firmness calibration guide.
Conclusion:For conclusion-level comparison, review mattress lifespan by construction.
Next Step:For your next decision step, review best mattress for back sleepers.
Next Step:For your next decision step, review sleep trial and return-window guide.