-
Extra Firm
-
On Sale
Overview
- SleepMatch: red
Mancini's Sleepworld Diamond Extra Firm Mattress 11"
- Built for firm spinal support all night long
- Extra firm pocketed coils resist body impressions over time
- Upholstery-grade high-density foam holds its shape for years
- Fabric-wrapped coil system reduces motion transfer noticeably
- Stretch knit cover breathes and moves with you
-
In Stock
Overview
Mancini's Sleepworld Diamond Extra Firm Mattress 11" – Queen
⭐⭐⭐⭐⭐ 4.6 · 100+ verified sleepers
The Mancini's Sleepworld Diamond Extra Firm Mattress 11" is a hybrid mattress built for back and stomach sleepers who need a firm mattress for back pain relief and refuse to compromise on long-term support. The stretch knit quilt panel sits over dense foam layers that keep the surface flat and unyielding so your spine stays where it needs to be, not where the mattress decides to put it. The pocketed coil system moves independently beneath you, absorbing motion while the upholstery-grade high-density base resists the gradual softening that turns a firm mattress into something else entirely. If you have been through too many mattresses that felt right in the store and wrong six months later, the Diamond Extra Firm is worth a conversation with one of our sleep specialists at any Mancini's Sleepworld location.
COMFORT AND FEEL: Extra firm surface with a flat, stable feel and unyielding lumbar support beneath.
SIZE: This queen sized mattress is a versatile fit for master bedrooms, couples with shared sleep space, and anyone who needs maximum supported sleeping surface.
BEST SLEEP MATCH: Best for back and stomach sleepers who need extra firm support to keep hips level and spine neutral through the night.
BEST FOR: Ideal for sleepers who wake up with lower back tension, need a flat non-contouring surface, or have been told by a doctor to sleep firmer.
CONSTRUCTION SPECIFICATIONS: The comfort layer is 1.5" of extra firm high-density foam that keeps the surface flat under body weight. Beneath it, a shock-absorbing H.D. foam layer transitions pressure smoothly into the coil system. The pocketed coils move independently so motion stays where it starts. The super heavy-gauge wire coil system delivers the resistance that keeps this mattress feeling firm, not soft, year after year. Contents are CertiPUR-US certified.
SETUP AND COMPATIBILITY: Works on adjustable bases, platform frames, and box springs with no tools required. In-home professional setup is available through Mancini's Sleepworld.
NOT A FIT FOR: Side sleepers who need hip and shoulder pressure relief, or anyone who prefers a contouring, cradling feel.
YOUR SLEEP, BACKED BY US
Every mattress at Mancini's Sleepworld comes with a 120-night comfort guarantee and our Best Price Guarantee, so you never overpay. Add a premium mattress protector at checkout and you can choose to extend that to a full 365 nights. Try it in person at any of our locations before you buy, and count on free next-day delivery, in-home professional setup, and flexible financing to make the whole thing easy.
Features
-
Suitable For Adjustable Base
-
Motion Separation
-
Edge Support
- SleepMatch: red
Mancini's Sleepworld Diamond Extra Firm Mattress 11"
Features
- SKU: BRK-DIA-5M-XF-25
- MPN: 25WICOTEF_FP50
- GTIN: 810146418771
- Brand: Mancini's
- Collection: Sleepworld
- Type: Innerspring
- Mattress In A Box: No
- Firmness: Extra Firm
- Height: 11
- Length: 80
- Width: 60
- Shipping Height: 11.5
- Shipping Width: 80
- Shipping Length: 60
- Warranty: 10 Year
- Cover Material: Polyester Knit
- Quilting Layers: 1 1/2'' Super Soft Quilt Foam
- Comfort Layers: 1 1/2'' Extra Firm Support H.D. Foam
- Support System: 720 13.5 Ga. Pocketed coil,0.75'' Shock Absorbing H.D. Base Foam
Specification
-
Suitable For Adjustable Base: Yes
-
Motion Separation: Yes
-
Edge Support: Yes