Beautyrest
Beautyrest Black® Hybrid Series Four XCS 15" Medium Mattress
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Beautyrest Black Hybrid Series Four XCS Medium: the cool-sleeping premium hybrid most bodies land on
If you cross-shop one Beautyrest Black against the rest of the premium-hybrid field, make it this one. The Series Four XCS in Medium runs the full XCS architecture, a Triple-Stranded Pocketed Coil core under a 2K micro-coil contour layer, at 15 inches and a 5 out of 10 feel, built around BlackICE Max, the coolest cooling system in the entire Beautyrest Black hybrid range. It is the version of Black for the sleeper who wants flagship pressure relief, a balanced do-everything feel, and an honest answer to running hot. If you have wanted a deep, conforming bed but kept waking up warm, this is the model engineered for exactly that.
The cooling is the headline
XCS leads with temperature. A cool-to-the-touch Sleep Climate surface sits over Micro Diamond Memory Foam infused with BlackICE Max, Beautyrest's most aggressive cooling system, with 30 percent more cooling power than the prior generation. It works on contact, pulling heat off the surface the moment you lie down instead of waiting for the bed to catch up to you. No mattress is air conditioning, and the honest way to put it is that this is real, testable engineering against heat, not a marketing word. It is the strongest cooling system in the Beautyrest Black hybrid line, so if heat is the thing that has failed you before, XCS is where to put your weight.
Support, layer by layer
Beneath the cooling top sits the ContourCover comfort system, built from FORM HD and FORM HD Max material with TotalEmbrace XHD and Dynamic Response memory foams that conform closely for that flagship pressure relief. Under that ride 2,000 individually responsive micro coils, and beneath them the Triple-Stranded Pocketed Coil core. Each support coil is wrapped in its own pocket and twisted from three strands of steel, so the bed holds you point by point. The 2K micro coils add a finer second layer of suspension that contours in more detail than coils alone, and that micro-coil layer is the exact step that separates Series Four from Series Three.
Tuned to medium
This is the Medium, a 5 out of 10, and a true medium is the most universal feel there is: supported without going hard for backs, enough give for most shoulders on your side, and easy to move across when you are a combination sleeper who changes position through the night. It is the safe pick when two people share the bed and you are not sure whose preference should win.
Living with it, night after night
Over time, the parts you stop noticing are the ones doing the work. Those wrapped coils flex independently to isolate movement, so when a partner turns or gets up, their motion barely crosses to your side. The layered FORM HD foams over a perimeter-reinforced coil unit keep a stable edge on the tall 15-inch build, so the usable surface holds out to the sides rather than collapsing when you sit on it. It carries the brand's 10-year limited warranty, honored here as an authorized dealer, and it is compatible with adjustable bases, including split-head setups through the Split Head Queen and Split Head King sizes.
Where it sits on the ladder
The XCS line climbs from the Series Three Medium (cooling plus the Triple-Stranded coil, no micro coils) to this Series Four Medium (the 2K micro-coil layer added) up to the Series Five Plush (4,000 micro coils, the soft flagship). Compare the full range in the Beautyrest collection, and lean on the Mattress Overstock floor to talk it through. Everyone here is paid the same regardless of which brand you choose, so the guidance is honest and never pushed toward one bed.
Ten minutes beats ten reviews
Cooling and deep contour are both feels you confirm lying down, not reading specs. The Series Four XCS Medium is on the floor across all five Kentucky showrooms (Lexington on Nicholasville Road, Richmond, Georgetown, London, and Somerset) with the rest of the Beautyrest Black line, no appointment needed. Select your size to see the live Mattress Overstock price, and when it ships, delivery, setup, and old-mattress haul-away are all free across the Kentucky service area.
What makes this mattress different
BlackICE Max Cooling
Beautyrest's most aggressive cooling, a cool-to-the-touch surface over Micro Diamond Memory Foam with 30 percent more cooling power than the prior generation, the coolest system in the Black hybrid range.
Triple-Stranded Pocketed Coil
Each coil is wrapped in its own pocket and twisted from three strands of steel, point-by-point support with strong motion isolation.
2,000 Micro Coils
A finer second layer of individually responsive micro coils for more detailed contour than coils alone, the step up from Series Three.
Medium Feel, 5 out of 10
Tuned to a true 5 out of 10 for back, side, and combination sleepers who want one balanced, do-everything feel.
ContourCover Comfort System
FORM HD and FORM HD Max material with TotalEmbrace XHD and Dynamic Response memory foams that conform closely for flagship pressure relief.
Stable Edge, 15-inch Build
Layered FORM HD foams over a perimeter-reinforced coil unit keep the usable surface holding out to the sides on the tall build.
Adjustable-Base Ready
Compatible with adjustable bases, including split-head setups through the Split Head Queen and Split Head King sizes.
100-Night Trial, 10-Year Warranty
Sleep on it for 100 nights, backed by Beautyrest's 10-year limited warranty, honored when you buy from us as an authorized dealer.
Series Four XCS Medium, layer by layer
The Series Four XCS stacks a cooling comfort system over two suspensions of steel:
- Sleep Climate surface. A cool-to-the-touch cover that starts pulling heat the moment you lie down.
- Micro Diamond Memory Foam with BlackICE Max. The pressure-relieving comfort layer that carries Beautyrest's most aggressive cooling, 30 percent more cooling power than the prior generation.
- ContourCover comfort system. FORM HD and FORM HD Max material with TotalEmbrace XHD and Dynamic Response memory foams, layered for close-conforming flagship comfort.
- 2K Micro Coils. 2,000 individually responsive micro coils, a finer contour layer that reads detail foam alone cannot, and the step that separates Series Four from Series Three.
- Triple-Stranded Pocketed Coil core. Each coil wrapped in its own pocket and twisted from three strands of steel for point-by-point support and motion isolation, over a foam base.
15 inches tall, medium (5 out of 10), CertiPUR-US certified foams, a 100-night trial, and a 10-year limited warranty. (Architecture from Beautyrest's published spec; individual layer thicknesses are not all disclosed.)
What's inside Beautyrest Black
Five layers, engineered together: a cool quilted surface, pressure-relieving gel foam, and the Triple-Stranded Pocketed Coil® core that defines the Black line.
Honest fit, and who should look elsewhere
Combination sleepers. The best fit on this page. A true medium is the easiest feel to move across, and the 2K micro coils recover instantly when you change position.
Hot sleepers. If heat is your main complaint, this is the line to feel. BlackICE Max is the coolest cooling system in the entire Black hybrid range.
Back sleepers. Supported without going hard. The Triple-Stranded coil holds the lower back while the comfort layers take the edge off.
Side sleepers. Enough give for most shoulders and hips at a 5 out of 10. Dedicated side sleepers who want a softer landing should feel the Series Five Plush instead.
Couples and the undecided. The wrapped coils and micro coils keep one person's movement off the other side, and a balanced medium is the compromise nobody has to apologize for.
Who should look elsewhere. If you want a firm, on-top-of-the-bed feel, this medium will not become that, and the Series Four XCS Firm is the better call. If you want a deep, sink-in plush, step up to the Series Five Plush. And no mattress is air conditioning, so if your heat is severe, feel the XCS line in person before you commit.
Specifications
| Height | 15" |
|---|---|
| Feel | Medium Hybrid |
| Firmness | 5 out of 10 (10 = firmest) |
| Construction | Sleep Climate Surface (cool-to-the-touch) + ContourCover with FORM HD Material + FORM HD Max Material + TotalEmbrace XHD Memory Foam + Dynamic Response Memory Foam + 2K Micro Coils + Triple-Stranded Pocketed Coil support over a foam base |
| Cooling | BlackICE Max Cooling Technology (30% more cooling power than the prior generation) topped by a cool-to-the-touch Sleep Climate Surface that pulls heat from the sleep surface on contact; the strongest cooling system in the Beautyrest Black hybrid range. |
| Motion isolation | Excellent: Triple-Stranded Pocketed Coil Technology lets coils flex independently to isolate movement so a partner's motion is not transferred across the bed; layered FORM HD foams plus a perimeter-reinforced coil unit keep a stable edge on the 15-inch build. |
| Adjustable base | Yes, compatible with adjustable bases (including split-head adjustable bases via Split Head Queen / Split Head King sizes) |
| Certifications | CertiPUR-US certified foams |
| Warranty | 10-year limited warranty |
| Trial period | 100 days at Mattress Overstock |
Frequently asked questions
How firm is the Series Four XCS Medium?
About 5 out of 10, a true, balanced medium. Supported for back sleepers, with enough give for most shoulders on your side, and easy for combination sleepers to move across.
What makes XCS different from the core Beautyrest Black?
XCS is Beautyrest's coolest, most contouring Black hybrid line. It leads with BlackICE Max cooling and a layered micro-coil and Triple-Stranded coil system. If cooling matters to you alongside flagship pressure relief, XCS is the line to feel.
Does it really sleep cool?
Cooling is the XCS headline: a cool-to-the-touch Sleep Climate surface over Micro Diamond Memory Foam with BlackICE Max, Beautyrest's most aggressive cooling system, 30 percent more cooling power than the prior generation. No mattress is air conditioning, but this is real, testable engineering against heat, and it is the strongest cooling in the Black hybrid range.
How is Series Four different from Series Three and Series Five?
Series Four adds a layer of 2,000 micro coils over the Triple-Stranded coil for more detailed contour than Series Three, which has no micro coils. Series Five steps up to 4,000 micro coils as the soft flagship.
What are the Triple-Stranded Pocketed Coils?
Beautyrest's signature support: each coil is wrapped in its own pocket and twisted from three strands of steel, so the bed supports point by point and a partner's movement barely crosses it.
How tall is it, and will my sheets fit?
15 inches. Deep-pocket sheets rated 15 inches or more sit best. Worth measuring against your frame and headboard before delivery.
Do I need a special foundation or box spring?
No box spring required. A sturdy platform, a close-slatted base, a solid foundation, or a compatible adjustable base all work, and it supports split-head adjustable setups through the Split Head Queen and Split Head King sizes. A traditional box spring is not the right base for this hybrid and can affect the feel.
What is the trial and warranty?
A 100-night trial plus Beautyrest's 10-year limited manufacturing warranty, honored when you buy from us as an authorized dealer.
If it is not right, can I return it for a refund?
Within the 100-night trial you exchange it for store credit toward any bed of equal or greater value (no cash refund), so you walk away with the right mattress rather than the wrong one. The fastest way to skip the guesswork is to lie on it first at a showroom.
Can I see it near me?
Yes. It is on the floor across our five Kentucky showrooms (Lexington on Nicholasville Road, Georgetown, Somerset, London, and Richmond) with the rest of the Beautyrest Black line, no appointment needed. Free local delivery, and we haul the old mattress away.
Buy it from people you can actually visit
- Free local delivery To your home across Central & Eastern Kentucky.
- Free setup We place and set up your new bed in the room.
- Free old-mattress haul-away The old one goes out the same day the new one comes in.
Independently owned in Kentucky since 2012. Walk in any day (no appointment) and someone who actually knows the floor will help you find the right fit.
Still deciding?
Try it in person at any Kentucky showroom
Walk into any Mattress Overstock location, lie down, and feel the difference yourself. No appointment, no pressure. Our team has over 100 years of combined mattress experience and we're here to help you find the right fit.
