Beautyrest
Beautyrest Black® Hybrid Series Three XCS 14.5" Firm Mattress
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Beautyrest Black Hybrid Series Three XCS Firm: the cool-sleeping premium hybrid
The Beautyrest Black Hybrid Series Three XCS in Firm is the cooling-focused entry to the XCS line: an 8-out-of-10 feel at 14.5", built around BlackICE™ Max cooling and the Triple-Stranded Pocketed Coil® core. XCS is Beautyrest's coolest, most contouring Black hybrid, engineered for the sleeper who wants flagship pressure relief and runs warm. If you have spent years flipping the pillow to the cool side and waking up hot anyway, this bed is built to answer 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, the most aggressive cooling system Beautyrest builds. The numbers are specific: it is engineered to move body heat away up to 2X longer for 30% more cooling power than the standard Beautyrest Black Hybrid, which does not carry BlackICE Max at all. Firm beds that also sleep cold are rarer than they should be, and this is where that contradiction gets resolved.
What you notice in the first few minutes
Lie down and the cover reads cool against your skin right away, before the bed has done anything else. Then the comfort layers settle: Micro Diamond™ Memory Foam, FORM HD, and the ContourCover™ high-density foams conform closely while the coil core holds your hips and shoulders where they belong. Because this is the Firm, you rest on top of the bed rather than sinking in. Roll from back to stomach and the surface stays level instead of letting your midsection dip.
Support, layer by layer
Beneath the cooling comfort layers, the Series Three XCS rides on the Triple-Stranded Pocketed Coil® core: each coil wrapped in its own pocket and twisted from three strands of steel, so the bed supports point by point. That same construction isolates motion, keeping a partner's movement on their side. A Dynamic Response™ foam transition bridges the top layers to the coils so the firm surface stays stable rather than bouncy. The foams are CertiPUR-US certified, so what sleeps cool also sleeps clean.
Tuned to firm, and who that suits
This is the Firm, an 8 out of 10. Firm here means supported, not hard: the cooling foams still relieve pressure while the coils hold your spine level. That makes it a natural fit for back sleepers who want flat, even support, stomach sleepers who need the hips kept from sagging, and heavier sleepers the Triple-Stranded coil is built to support. Couples benefit from the wrapped-coil motion separation. The honest exception is dedicated side sleepers: an 8 out of 10 is likely too firm for a hip and shoulder that need to press in, and the same-tier Series Three XCS Medium or Plush will serve you better.
Where it sits in the line
Series Three is the cooling-focused base of the XCS ladder, with no micro-coil layer. Step up to the Series Four XCS Firm and you add a layer of 2K Micro Coils for finer surface contour over the same core. The flagship Series Five XCS stacks 4,000 micro coils. If your spine wants firm, Series Three gives you the full XCS cooling story without paying for hardware you would not feel. Compare the rest of the ladder in the full Beautyrest collection.
Living with it, and how to shop it
At 14.5" this is a tall bed, so deep-pocket sheets (15" and up) sit best, and it works on a sturdy platform, close-slatted base, solid foundation, or compatible adjustable base. The ContourCover™ design also enables split-head sizing for a split-head adjustable base. Cooling and deep contour are feels you confirm lying down, not reading specs, which is why ten minutes face-down beats ten reviews. The Series Three XCS Firm is on the floor across the five Mattress Overstock showrooms (Lexington on Nicholasville Road, Richmond, Georgetown, London, and Somerset) with the rest of the Beautyrest Black line, no appointment needed. Mattress Overstock has earned roughly 4.7 stars from more than 535 Google reviews across those Kentucky showrooms, and every associate on the floor is paid the same no matter which brand you choose, so the guidance stays honest. As an authorized Beautyrest dealer, the team honors the same 100-night trial Beautyrest offers plus the 10-year limited warranty; if the feel is not right, exchange it for store credit toward any bed of equal or greater value (no cash refund, no restocking-fee traps). Free local delivery, setup, and old-mattress haul-away are included across the Kentucky service area. Lie on it in Lexington this week, then select your size to see the live Mattress Overstock price.
What makes this mattress different
BlackICE™ Max Cooling, 30% More Power
Beautyrest's most aggressive cooling: a cool-to-the-touch Sleep Climate surface over BlackICE™ Max foam, engineered to move body heat away up to 2X longer for 30% more cooling power than the standard Black Hybrid.
Triple-Stranded Pocketed Coil®
Each coil is wrapped in its own pocket and twisted from three strands of steel, so support lands point by point and a partner's movement barely crosses the bed.
Micro Diamond™ Memory Foam
A close-conforming comfort foam that carries the BlackICE™ Max cooling layer right at the surface, where your body meets the bed.
Firm Feel, 8 out of 10
Tuned to an 8 out of 10 for back and stomach sleepers who want to rest on top of the bed with firm, level support that still relieves pressure.
ContourCover™ Comfort System
FORM HD and high-density Dynamic Response™ foams that conform closely for flagship pressure relief over a stable, firm surface.
14.5" Premium Hybrid, Handcrafted
The cooling-focused entry to the XCS line, Beautyrest's coolest and most contouring Black hybrid, built on the core Triple-Stranded coil.
CertiPUR-US® Certified Foams
Every foam layer is CertiPUR-US certified for content, emissions, and durability, so what sleeps cool also sleeps clean.
100-Night Trial, 10-Year Warranty
Rest on it for 100 nights, backed by Beautyrest's 10-year limited warranty, honored in full when you buy from an authorized dealer.
Series Three XCS Firm, layer by layer
The Series Three XCS stacks a full cooling comfort system over Beautyrest's core coil, from the surface down:
- Sleep Climate Surface. A cool-to-the-touch ContourCover™ cover that reads cool against your skin the moment you lie down, before the bed does anything else.
- Micro Diamond™ Memory Foam with BlackICE™ Max. The pressure-relieving comfort layer that carries the cooling, engineered to move body heat away up to 2X longer for 30% more cooling power than the standard Black Hybrid.
- FORM HD and ContourCover™ comfort foams. Close-conforming flagship comfort that cradles shoulders and hips without going soft.
- Dynamic Response™ Memory Foam transition. A high-density bridge that keeps the firm surface stable instead of bouncy as it meets the coils.
- Triple-Stranded Pocketed Coil® core. Each coil wrapped and twisted from three strands of steel for point-by-point support and strong motion separation.
14.5" tall, firm (8 out of 10), CertiPUR-US certified foams, backed by a 100-night trial and a 10-year limited warranty. (Architecture from Beautyrest's published spec; individual layer thicknesses are not all published.)
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.
Built for back, stomach, and hot sleepers who want firm
Back sleepers: the natural home for this bed. The coils hold your spine flat and level while the cooling foams take the edge off your shoulders and tailbone.
Stomach sleepers: the firm 8-out-of-10 surface keeps your hips from sagging, the usual cause of a sore lower back in the morning.
Hot sleepers who want firm support: the reason XCS exists. Firm beds that also sleep cold are rarer than they should be, and BlackICE™ Max is the coolest system Beautyrest builds.
Heavier sleepers: the Triple-Stranded Pocketed Coil is engineered to support weight point by point and resist the sag a foam-only bed gives in over time.
Couples: the individually wrapped coils isolate motion, so one person turning over barely reaches the other side.
Dedicated side sleepers: the honest exception. An 8 out of 10 is likely too firm for a hip and shoulder that need to press in. Try the same-tier Series Three XCS Medium or Plush instead, and the Mattress Overstock team can walk you across all three on the floor.
Specifications
| Height | 14.5" |
|---|---|
| Feel | Firm Hybrid |
| Firmness | 8 out of 10 (10 = firmest) |
| Construction | ContourCover™ Sleep Climate Surface (cool-to-the-touch) + Micro Diamond™ Memory Foam with BlackICE™ Max Cooling + FORM HD Material + Dynamic Response™ Memory Foam + high-density comfort foams over Triple-Stranded Pocketed Coil® Technology |
| Cooling | BlackICE™ Max Cooling Technology delivers 30% more cooling power, moving body heat away up to 2X longer, paired with a cool-to-the-touch Sleep Climate Surface: the XCS cooling system that the non-XCS Beautyrest Black Hybrid does not offer. |
| Motion isolation | Very good: Triple-Stranded Pocketed Coil® Technology, Beautyrest's most advanced support and motion-separation system, wraps each coil individually to isolate partner movement while the high-density foams keep the firm surface stable. |
| Adjustable base | Yes, compatible with adjustable bases (ContourCover™ design also enables split-head sizing for split-head adjustable bases) |
| 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 Three XCS Firm?
About 8 out of 10, where 10 is firmest. Firm here means supported, not hard: the cooling comfort foams still relieve pressure at your shoulders and hips while the coils hold your spine flat and level.
What makes XCS different from the standard Beautyrest Black Hybrid?
XCS is Beautyrest's coolest, most contouring Black hybrid line, and it leads with the BlackICE™ Max cooling system the standard Black Hybrid does not carry. BlackICE Max moves body heat away up to 2X longer for 30% more cooling power. If you want flagship pressure relief and you run warm, XCS is the line to feel.
Does it really sleep cool?
Cooling is the whole point of XCS. A cool-to-the-touch Sleep Climate surface sits over Micro Diamond™ Memory Foam with BlackICE™ Max, engineered for 30% more cooling power than the standard Black Hybrid. No mattress is air conditioning, but this is real, testable engineering against heat, and it is the coolest system Beautyrest builds.
How does Series Three compare to Series Four and Series Five XCS?
Series Three is the cooling-focused base of the line on the Triple-Stranded Pocketed Coil, with no micro-coil layer. The Series Four XCS Firm adds a layer of 2K Micro Coils for finer surface contour; the Series Five XCS stacks 4,000 micro coils and is the flagship. If your spine wants firm, Series Three gives you the full XCS cooling without paying for hardware you would not feel.
What are the Triple-Stranded Pocketed Coils®?
Beautyrest's signature support system. Each coil is wrapped in its own fabric pocket and twisted from three strands of steel, so the bed supports point by point and a partner's movement barely crosses to your side.
How tall is it, and will my sheets fit?
14.5". This is a tall bed, so deep-pocket sheets rated 15" and up sit best.
Do I need a special foundation or adjustable base?
No special foundation required. A sturdy platform, a close-slatted base, a solid foundation, or a compatible adjustable base all work. The ContourCover™ design also supports split-head sizing for a split-head adjustable base.
What trial, warranty, and certifications come with it?
A 100-night trial, the same Beautyrest offers, plus a 10-year limited warranty, both honored in full when you buy from Mattress Overstock as an authorized Beautyrest dealer. The foams are CertiPUR-US certified for content, emissions, and durability.
Can I lie on it near me in Kentucky?
Yes. It is on the floor across the five Mattress Overstock 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 old-mattress haul-away are included across the Kentucky service area.
What if it is not the right feel after delivery?
Bring it back within the trial and exchange it for store credit toward any bed of equal or greater value, paying the difference if you trade up. There is no cash refund, but no restocking-fee traps either, and every associate on the floor is paid the same no matter which brand you choose, so the guidance you get stays honest.
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.
