Beautyrest
Beautyrest Black® Series Three 15.25" Plush Hybrid Mattress
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The honest verdict: the Series Three Plush Hybrid is the soft feel in the Series Three hybrid build, about a 3 out of 10, with the Self-Response™ Latex, SurfaceTouch™ Gel, and Micro Diamond™ cooling that set Series Three apart, on a tidier 15.25-inch profile than the tall Plush Pillow Top. It is for side sleepers who want refined plush comfort without the tallest pillow-top build, with the Triple-Stranded Pocketed Coil® core keeping the spine supported.
What it is, and the honest feel
Plush, but not a marshmallow. A 3 out of 10 is genuinely soft: the shoulder and hip sink in and the bed comes up around you, yet this is the refined kind of soft, not the loose, dead-soft kind. Self-Response™ Latex gives the plush a little life, so it answers gently when you shift instead of swallowing you, and the Triple-Stranded Pocketed Coil® core below holds the line, keeping a soft bed from sliding into a saggy one over a long night. The 15.25-inch profile keeps that plush feel on a tidy hybrid build that dresses easily on a standard foundation or platform.
What you notice in the first few minutes
Lie down on your side and the first thing is the give: the shoulder settles, the hip settles, and the pressure points you came in worrying about quiet down. A beat later, you notice you do not keep sinking, because the coils catch you and the latex keeps the surface responsive, so rolling over stays easy. Then there is temperature. Soft surfaces gather heat, since more of you touches the bed, so the cooling sits where it counts: Micro Diamond™ memory foam and a cool-to-the-touch cover pull warmth off the top, over a coil core that breathes more than all-foam can.
Who it suits, and honestly who it does not
This bed is built for side sleepers first: plush, pressure-relieving comfort that still keeps your spine level. It also fits the plush seeker who wants the refinement without the tallest build, and the couple where one partner wants soft, since the pocketed coils move independently and a partner turning over barely crosses to your side. Honestly, it is not for everyone:
- Back and stomach sleepers. A 3 out of 10 will likely let your hips dip. The same-build Series Three Firm Hybrid (about a 7 out of 10) keeps you flatter on the identical latex, gel, and cooling stack.
- If you want the deepest, tallest cushion with 2K coils. The Series Three Plush Pillow Top stacks a deeper cushioned top with 2K Micro Coils on a 16.75-inch profile.
- If you want a responsive, on-top feel. This is a soft, settle-in surface. You sink into it rather than ride on top of it.
Living with it over time
The coil support under the plush keeps soft from becoming a hammock the way a soft all-foam bed eventually does. The pocketed coils handle motion night after night, the cooling keeps the surface from holding heat, and the CertiPUR-US certified foams sit behind a 10-year limited warranty. It also works on an adjustable base for reading or watching TV in bed, and sits just as well on a flat foundation or platform.
Why buy it from Mattress Overstock
Locally owned and serving Kentucky since 2012, with five showrooms you can walk into, in Lexington (on Nicholasville Road), Georgetown, Somerset, London, and Richmond, no appointment needed. Soft is judged best lying down, so whether you want this tidy hybrid, the firm version of the same build, or the tall pillow top is a feel decision the team can help you compare side by side. Spend a few minutes on your side before you commit, then select your size to see the live Mattress Overstock price. You get a 100-day comfort guarantee; if it is not right, you exchange it for store credit toward any bed of equal or greater value, no cash refund but no restocking-fee games either. Free local delivery and setup, and the team hauls your old mattress away. Everyone on the floor is paid the same no matter which brand you choose, so the guidance stays honest, part of why shoppers rate us about 4.7 stars across hundreds of Google reviews at our Kentucky stores.
Feel the plush, medium, and firm tiers in the full Beautyrest Black lineup. A minute on your side tells you more than this whole page can.
What makes this mattress different
Refined soft hybrid (3 out of 10)
Genuinely plush comfort in the Series Three hybrid build, with latex, gel, and Micro Diamond cooling, on a tidy 15.25-inch profile.
Self-Response™ Latex + SurfaceTouch™ Gel
Latex keeps the plush responsive rather than dead-soft and adds airflow through its ventilated design; the gel softens the inch where your body first lands.
Plush surface, real coil support
The Triple-Stranded Pocketed Coil® core holds your spine level under the plush, so soft never slides into saggy the way a soft all-foam bed can.
Series Three cooling stack
Micro Diamond™ memory foam and a cool-to-the-touch cover pull heat off the surface, over a pocketed-coil core that breathes more than all-foam.
Excellent motion separation for couples
Triple-Stranded Pocketed Coils move independently, so a partner turning over barely crosses to your side of the bed.
Tidy 15.25-inch profile, base-friendly
A cleaner height than the tall pillow top that dresses easily on a standard foundation or platform, and it works on an adjustable base.
CertiPUR-US foams, 10-year warranty
Foams certified for content and low-VOC emissions, backed by a 10-year limited warranty.
Try it, then buy it in Kentucky
100-day comfort guarantee, free local delivery and old-mattress haul-away, and five KY showrooms where you can lie on this exact bed first.
Soft, refined, supported: the hybrid build layer by layer
The Series Three Plush Hybrid is built feel-first, from the surface down, on a 15.25-inch hybrid profile.
1. Cool-to-the-touch cover. The top layer you first touch is built to draw heat away from the body rather than trap it, part of the Series Three cooling story.
2. SurfaceTouch™ Gel comfort. Gel quilted near the surface softens the first inch your shoulder and hip land on, for immediate pressure relief.
3. Self-Response™ Latex. A responsive, ventilated latex layer keeps the plush feeling alive instead of dead-soft, so the bed answers gently when you shift and adds airflow through the comfort layers.
4. Micro Diamond™ memory foam. Diamond-infused memory foam contours to the body while continuing to move heat off the sleep surface.
5. Triple-Stranded Pocketed Coil® core. Individually wrapped coils carry the support and the motion separation, holding the spine level under the plush and isolating a partner's movement.
The result is a soft top that does not collapse into a hammock, because the give lives in the foams and latex while the coils do the supporting. For the deepest plush with 2K Micro Coils on a taller build, see the Series Three Plush Pillow Top; for the firm version of this exact build, see the Series Three Firm Hybrid. Compare the plush tiers in the Beautyrest Black lineup.
Shop the Beautyrest Black lineup →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.
Refined plush for side sleepers (and who should size up to firm)
Side sleepers: the soft surface lets the shoulder and hip settle in while the coils keep the spine level. This is the feel the bed was built around.
Plush seekers who want a tidy profile: refined plush with the latex, gel, and cooling, without the tallest pillow-top build.
Couples where one wants soft: the Triple-Stranded Pocketed Coils isolate motion, so one partner shifting barely reaches the other side.
Anyone who reads or watches TV in bed: it flexes on an adjustable base and sits just as well on a flat foundation or platform.
Back and stomach sleepers, probably not: a 3 out of 10 will likely let your hips dip. The same-build Series Three Firm Hybrid (about a 7 out of 10) keeps you flatter on the identical latex, gel, and cooling stack.
Wrong fit if you want an on-top, responsive feel or the deepest cushion: this is a settle-in surface, and for a deeper plush top with 2K Micro Coils, the taller Plush Pillow Top is the better call.
Specifications
| Height | 15.25" |
|---|---|
| Feel | Plush Hybrid |
| Firmness | 3 out of 10 (10 = firmest) |
| Construction | Plush comfort layers + cool-to-the-touch cover and SurfaceTouch™ Gel over Self-Response™ Latex, Micro Diamond™ foam, and a Triple-Stranded Pocketed Coil® core: 15.25 inches, plush hybrid. |
| Cooling | Series Three cooling: Micro Diamond™ memory foam and a cool-to-the-touch cover pull heat off the surface, over a Triple-Stranded Pocketed Coil core that breathes more than all-foam. |
| Motion isolation | Excellent. Triple-Stranded Pocketed Coils move independently, so a partner's movement barely crosses the bed. |
| Adjustable base | Yes, compatible with adjustable bases |
| Certifications | CertiPUR-US certified foams |
| Warranty | 10-year limited warranty |
| Trial period | 100 days at Mattress Overstock |
Frequently asked questions
How soft is the Series Three Plush Hybrid?
A genuine plush, about 3 out of 10, in the Series Three hybrid build with Self-Response™ Latex, SurfaceTouch™ Gel, and Micro Diamond™ cooling, on a tidy 15.25-inch profile. The shoulder and hip settle in, and the Triple-Stranded Pocketed Coil® core keeps the softness supported.
Is this a good mattress for side sleepers?
Yes, side sleepers are exactly who it is built for. The soft top lets the shoulder and hip sink in to relieve pressure, while the coil core keeps your spine level instead of letting your hips cave the way a soft all-foam bed can.
Will a soft bed still support my back?
Yes. The Triple-Stranded Pocketed Coil® core holds your spine level under the plush surface, which a soft all-foam bed cannot reliably do over a full night. The give lives in the foams and latex; the support lives in the coils.
What about back or stomach sleepers?
A 3 out of 10 will likely let your hips dip if you sleep on your back or stomach, so it is not the best match. The same-build Series Three Firm Hybrid (about a 7 out of 10) gives you the identical latex, gel, and cooling on a firmer, flatter feel.
How is it different from the Series Three Plush Pillow Top?
The Plush Pillow Top (16.75 inches) stacks a deeper cushioned top with 2K Micro Coils. This Plush Hybrid is a tidier 15.25-inch profile with the same latex, gel, and cooling refinement, but without the extra pillow-top height or the 2K coils.
Does it sleep hot?
It is built to run cool for a soft bed. Soft surfaces gather more heat because more of you touches the mattress, so Series Three answers with Micro Diamond™ memory foam and a cool-to-the-touch cover that pull warmth off the top, over a pocketed-coil core that breathes more than all-foam, and the ventilated latex adds airflow through the comfort layers.
Is it good for couples and motion?
Yes. The Triple-Stranded Pocketed Coils move independently, which is Beautyrest's most advanced motion separation, so when one partner turns over the movement barely crosses to the other side of the bed.
Do I need a special base, and does it work on an adjustable bed?
It works on an adjustable base and flexes with it for reading or watching TV, and it also sits well on a sturdy flat foundation or platform. The 15.25-inch profile is a clean height that dresses easily with standard bedding. Measure deep-pocket sheets against 15.25 inches before you buy.
What are the certifications and warranty?
The foams are CertiPUR-US certified, made without formaldehyde, flame retardants, prohibited phthalates, or heavy metals, and meet low-VOC standards for indoor air quality. The mattress carries a 10-year limited warranty.
Can I try this mattress in person, and how do delivery and the guarantee work?
Yes, and with a mattress we would always rather you did. Mattress Overstock is a Kentucky-owned company that has served the state since 2012, with five showrooms you can visit: Lexington (on Nicholasville Road), Georgetown, Somerset, London, and Richmond. Come lie on this exact mattress in your own sleeping position before you decide. We deliver free across our Kentucky service area and haul your old mattress away, and you get a 100-day comfort guarantee: if the feel is not right, exchange it for store credit toward any bed of equal or greater value (no cash refund). Because everyone on our floor is paid the same no matter which brand you choose, the guidance you get is 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.
