-
Extra Firm
-
On Sale
Overview
- SleepMatch: red
Mancini's Sleepworld Onyx Extra Firm Mattress 13"
- Built for back pain relief in an extra firm innerspring
- Cooling stretch knit cover pulls heat away all night
- Gel-infused memory foam quilting keeps surface temperature down
- Heavy-gauge fabric-wrapped coils deliver motion separation
- Super high-density support layers resist wear year after year
-
In Stock
Overview
Mancini's Sleepworld Onyx Extra Firm Mattress 13" · Queen
⭐⭐⭐⭐⭐ 5.0 · 5+ verified sleepers
The Mancini's Sleepworld Onyx Extra Firm Mattress 13" is an innerspring mattress built for back sleepers and stomach sleepers who need an extra firm mattress for back pain relief without sacrificing breathability. At 13 inches tall, it delivers a solid, unyielding sleep surface that keeps the spine in a neutral position so you stop waking up with that familiar morning stiffness in your lower back. The coil system works independently beneath each zone, so a restless partner on one side of the bed stays a restless partner on their side only. Stop by any Mancini's Sleepworld location and our sleep specialists will put this mattress next to every competing option so you can feel the difference yourself.
COMFORT AND FEEL: Extra firm innerspring feel with a cool quilted surface and zero sink.
SIZE: This queen sized mattress is a versatile fit for couples or single sleepers who want maximum stretch-out space.
BEST SLEEP MATCH: Best for back sleepers and stomach sleepers who want a firm mattress for back sleepers. The unyielding surface keeps hips lifted and spine aligned through the night.
BEST FOR: Ideal for sleepers who need strong lumbar support, run warm at night, or share a bed and want motion kept to their partner's side.
CONSTRUCTION SPECIFICATIONS: The cooling stretch knit cover is quilted with gel-infused memory foam that pulls heat away as you settle in. Firm support foam beneath adds just enough cushion without letting you sink. Fabric-wrapped coils built with heavy-gauge wire deliver the rigid, stable foundation that extra firm sleepers rely on. Super high-density base foam keeps the mattress from softening over time. CertiPUR-US certified foams throughout.
SETUP AND COMPATIBILITY: Delivered flat with in-home professional setup available. Compatible with adjustable bases, platform frames, and standard box springs. No tools needed for setup.
NOT A FIT FOR: Side sleepers or pressure-sensitive sleepers who need contouring cushion at the hip and shoulder. Not ideal for sleepers who prefer any amount of body hug or sink.
YOUR SLEEP, BACKED BY US
Every mattress at Mancini's Sleepworld comes with a 120-night comfort guarantee and our Rest Easy Promise, which includes a Best Price Guarantee, free next-day delivery, and flexible financing. Come try this one in person before you buy. Add a premium mattress protector at time of purchase and you can upgrade your guarantee to a full 365 nights, giving you an entire year to be certain this is the right mattress for you.
Features
-
Suitable For Adjustable Base
-
Motion Separation
-
Cooling Technology
-
Edge Support
- SleepMatch: red
Mancini's Sleepworld Onyx Extra Firm Mattress 13"
Features
- SKU: BRK-ONY-5M-XF-25
- MPN: 25WICRAFEF_FP50
- GTIN: 810146419082
- Brand: Mancini's
- Collection: Sleepworld
- Type: Innerspring
- Mattress In A Box: No
- Firmness: Extra Firm
- Height: 13
- Length: 80
- Width: 60
- Shipping Height: 13
- Shipping Width: 80
- Shipping Length: 60
- Warranty: 10 Year
- Cover Material: Polyester Knit
- Quilting Layers: 3/4 Extra Firm Quilt Poly,3/4 H.D Gel Infused M - Foam
- Comfort Layers: 1'' Firm Support H.D. Foam ,1.5'' Extra Firm H.D. Support Foam
- Support System: 720 13.5 Ga. Pocketed coil, 1.0'' Shock Absorbing H.D. Base Foam
Specification
-
Suitable For Adjustable Base: Yes
-
Motion Separation: Yes
-
Cooling Technology: Yes
-
Edge Support: Yes