Beautyrest
Beautyrest Black® Series One 12.75" Extra Firm Mattress
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The honest verdict: the Series One Extra Firm is the firmest bed in the Beautyrest Black line, built for one job: holding you on top of the mattress instead of letting you sink in. At about an 8 out of 10, with a lean 12.75-inch profile and only a thin comfort layer over the Triple-Stranded Pocketed Coil core, it's the Black for dedicated back and stomach sleepers and anyone who has spent years calling every other bed too soft. If a plush mattress leaves your lower back aching, start here.
What it's made of, and what that does for you
- Triple-Stranded Pocketed Coil® core, firm-tuned. The coil technology that defines Black, set up for maximum support: your hips stay lifted and your spine stays level instead of bowing.
- A thin Beautyrest® Gel Memory Foam layer. Just enough contour to take the hard edge off the surface, without the deep cushion that would soften the firm feel. The foams are CertiPUR-US certified.
- Sleep Climate™ Technology. A cool-touch quilted surface over a coil core that breathes far more than all-foam. The days of a firm bed trapping heat are over.
- A lean 12.75 inches. The most compact profile in Series One: easy to dress, stable on platforms and adjustable bases, and exactly right for a firm feel, which comes from a shallow comfort layer over a solid core.
- Premium Black build, 10-year limited warranty. The brand's top line, in its most supportive configuration.
What you notice the first few minutes on it
Lie down on your back and the surface gives just slightly, then stops. That early stop is the point: the thin gel-foam quilt eases the immediate touch, then hands off fast to the coils, so you settle on top of the bed rather than into it. Your hips do not dip and your spine stays level, the alignment most back and stomach sleepers rest best on. Roll over and you feel how little the motion travels. Because the Triple-Stranded Pocketed Coils move independently, a partner shifting or getting up barely crosses to your side, so the firm support does not come at the cost of a restless night. The cool-touch quilting reads neutral, not warm.
Who it's not for, and the team would rather say so now
- Side sleepers. At an 8 out of 10 this presses hard on the shoulder and hip. You want cushion: the Firm Pillow Top softens the surface while keeping support, or the Plush Pillow Top for a true side-sleep cradle.
- Anyone who likes to feel cradled. This bed is supportive and flat by design; it will never feel like a hug or a memory-foam sink.
- Heavier side sleepers especially. Firm plus side sleeping is the combination most likely to cause shoulder and hip pressure, and the team will steer you to a softer Black on the floor.
How it sits in the Series One lineup
Think of Series One as a range of feels on the same Black coil DNA, with the Extra Firm at the far end. If 8 out of 10 is more firmness than your body wants, the Firm Pillow Top keeps the firm coil support but adds a cushioned top, and the Series One Medium is the universal middle most people land on. Firm is the most personal word in mattresses: your "supportive" and someone else's "sleeping on a board" can be the same bed, so feel two or three in a row under your own back.
Why buy it from Mattress Overstock
Independent and serving Kentucky since 2012, with five showrooms you can actually walk into, in Lexington (on Nicholasville Road), Georgetown, Somerset, London, and Richmond. No appointment needed. Come lie on it before you commit, ideally beside a medium so you feel the difference under your own body. Select your size to see the live Mattress Overstock price.
Free delivery, free setup, and free old-mattress removal across the Kentucky service area, and nobody on the floor earns more for talking you into a pricier bed, so the guidance you get is honest. Feel it against the softer feels in the full Beautyrest Black lineup. A couple of minutes on your back settles it.
What makes this mattress different
The firmest Beautyrest Black
An 8-out-of-10 feel for back and stomach sleepers who want to rest on top of the bed: premium coil support, minimal cushion.
Triple-Stranded Pocketed Coil® core
Individually-wrapped coils set up for maximum support, keeping the hips lifted and the spine level.
Thin gel-foam layer + Sleep Climate™
Just enough Beautyrest Gel Memory Foam to ease the surface, with cool-touch quilting and a coil core that breathes.
Lean 12.75-inch build, 10-year warranty
The most compact profile in Series One: stable, easy to dress, and the right design for a true firm feel.
A firm feel done right: shallow comfort layer over a solid coil core
Firmness isn't about a harder slab; it's about how little sits between you and the support. The Extra Firm runs a thin Beautyrest® Gel Memory Foam layer under a cool-touch quilted surface, then hands off fast to the Triple-Stranded Pocketed Coil® core: individually-wrapped coils tuned to hold firm and keep your hips from dipping.
Because the comfort layer is shallow, you sleep on top of the bed, and because the coils are pocketed, you still get Black's signature motion separation. At a lean 12.75 inches it's the most compact, stable build in Series One.
If it's more firmness than your body wants, the Firm Pillow Top keeps firm support but adds a cushioned top; the Series One Medium is the universal middle. Feel the range 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.
Built for the back and stomach sleeper
Back sleepers: firm coil support keeps your hips from sinking and your spine flat, the setup most back sleepers rest best on.
Stomach sleepers: the position that needs firm most; a soft bed lets the hips sag and the lower back arch, and the Extra Firm keeps you level.
Confirmed firm-bed people: if you grew up firm and never got comfortable on the soft beds everyone sells now, this is your Black.
Probably not for you if: you sleep on your side (your shoulder will feel the 8/10; see the Firm Pillow Top) or you want the memory-foam hug.
Specifications
| Height | 12.75" |
|---|---|
| Feel | Extra Firm |
| Firmness | 8 out of 10 (10 = firmest) |
| Construction | Cool-touch quilted surface with Sleep Climate™ Technology over a thin Beautyrest® Gel Memory Foam layer and a Triple-Stranded Pocketed Coil® support core: 12.75 inches, extra firm. |
| Cooling | A cool-touch quilted surface with Sleep Climate™ Technology over a Triple-Stranded Pocketed Coil core that breathes far 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 firm is the Beautyrest Black Series One 12.75" Extra Firm?
Genuinely firm, about 8 out of 10, where 10 is firmest. It's the firmest bed in the Beautyrest Black line. A thin gel-foam layer softens the immediate surface, but this is a supportive, sleep-on-top-of-it feel, not a cradle.
Who should buy an extra-firm mattress?
Back and stomach sleepers benefit most: firm support keeps the hips lifted and the spine level. It also suits people who simply prefer a firm feel. Side sleepers usually find 8/10 too hard on the shoulder; the Firm Pillow Top is the closest step softer.
Is it memory foam or a hybrid?
A hybrid. A thin Beautyrest® Gel Memory Foam layer sits over a Triple-Stranded Pocketed Coil® core. It's firm because the comfort layer is intentionally shallow, not because there are no coils, and those pocketed coils give it Black's strong motion separation.
Is 12.75" too thin for a good mattress?
Not for a firm bed. A firm feel comes from a shallow comfort layer over a solid coil core, so a lean 12.75-inch profile is exactly right for this design: stable, easy to dress with standard sheets, and well suited to platform and adjustable bases.
How do delivery and the comfort guarantee work?
We deliver across Kentucky with our own team, usually next business day when your size is in stock, and we haul the old mattress away. You also get a 100-day comfort guarantee: if the feel isn't right, exchange it for store credit toward any bed of equal or greater value (no cash refund). Give a new bed about three weeks to adjust.
Can I try it before I buy?
Yes, and with a firm bed you really should. "Firm" means something different to everyone. The Extra Firm is on our floors across Kentucky (Lexington, Georgetown, Somerset, London, and Richmond), next to the softer feels so you can compare under your own back.
Can I see this mattress in person near me?
Yes. And with a mattress, we'd 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 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.
