• Medium
  • On Sale
Mancini's Sleepworld Onyx Medium Mattress 13" image number 0
  • Suitable For Adjustable Base
  • Motion Separation
  • Cooling Technology
  • Edge Support

Overview

Mancini's Sleepworld Onyx Medium Mattress 13" · Cal King

The Mancini's Sleepworld Onyx Medium Mattress 13" is a hybrid mattress built for the combination sleeper who needs a reliable pressure point relief option in a Cal King that doesn't sacrifice cooling. The heavyweight "Cold" stretch knit quilt panel keeps surface heat from building up overnight, while the gel-infused memory foam layer underneath draws warmth away from the body. This is a mattress that earns its place on a large bed frame where two people need the coil system to absorb movement rather than broadcast it across the mattress.

The fabric-wrapped pocketed coil support system works alongside high-density upholstery-grade support foam to keep your hips and lower back from sinking too far out of alignment. Medium Soft comfort foam cushions the surface just enough to take pressure off shoulders and hips without that slow-quicksand feel. Our sleep specialists at Mancini's Sleepworld would love to put this next to a few other options so you can feel the coil response and surface softness side by side before you decide.

COMFORT AND FEEL: Medium feel with a responsive gel memory foam surface that supports without heavy sinking.

SIZE: This Cal King sized mattress is built for couples or tall sleepers who want generous room to spread out without giving up support.

BEST SLEEP MATCH: Back and combination sleepers will find this medium hybrid mattress in Cal King holds the hips level whether they're on their back or shifted to their side. The responsive coil base makes repositioning feel easy rather than effortful.

BEST FOR: Ideal for sleepers who run warm at night, wake up with hip or shoulder pressure, or need a coil system that absorbs a partner's movement.

CONSTRUCTION SPECIFICATIONS: The surface quilt panel uses a heavyweight cold-touch knit that keeps the cover from trapping heat. Medium Soft comfort foam cushions the first point of contact. Gel-infused memory foam beneath it pulls heat away and softens pressure at the hips and shoulders. Fabric-wrapped pocketed coils isolate motion and keep the spine level. High-density support foam at the base keeps the mattress from softening prematurely. Foams are CertiPUR-US certified.

SETUP AND COMPATIBILITY: Delivered flat with professional in-home setup available. Compatible with adjustable bases, platform frames, and box springs. No tools needed for setup.

NOT A FIT FOR: Sleepers who prefer a deep plush or pillow-top feel may find the medium surface too firm for side-only sleeping at lighter body weights.

YOUR SLEEP, BACKED BY US

Every mattress purchase at Mancini's Sleepworld comes with a 120-night comfort guarantee and our Best Price Guarantee. Add a premium mattress protector at the time of purchase and you can choose to upgrade your guarantee to a full 365 nights. Come try this Cal King in any Mancini's Sleepworld showroom before you buy, and let our sleep specialists walk you through it. Free next-day delivery, professional in-home setup, and flexible financing are all available.

  • SleepMatch: blue
Blue color code are mattresses of medium firm support. Most back sleepers and some side sleepers will find the beds measured as blue are best for them. Find Your Match

Mancini's Sleepworld Onyx Medium Mattress 13"

Price reduced from MSRP  $1,819.99 to Save 23% $1,399.99
Total $1,399.99
Item No. BRK-ONY-6M-MED-25
  • Built for sleepers who run warm and wake up stiff
  • Gel memory foam pulls heat away while you sleep
  • Fabric-wrapped coils absorb motion and hold the spine level
  • High-density support layers stay firm year after year
  • CertiPUR-US certified foams, safe for your home
No Foundation $0
No Protection $0
Availability:
  • In Stock
Total $1,399.99

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Overview

Mancini's Sleepworld Onyx Medium Mattress 13" · Cal King

The Mancini's Sleepworld Onyx Medium Mattress 13" is a hybrid mattress built for the combination sleeper who needs a reliable pressure point relief option in a Cal King that doesn't sacrifice cooling. The heavyweight "Cold" stretch knit quilt panel keeps surface heat from building up overnight, while the gel-infused memory foam layer underneath draws warmth away from the body. This is a mattress that earns its place on a large bed frame where two people need the coil system to absorb movement rather than broadcast it across the mattress.

The fabric-wrapped pocketed coil support system works alongside high-density upholstery-grade support foam to keep your hips and lower back from sinking too far out of alignment. Medium Soft comfort foam cushions the surface just enough to take pressure off shoulders and hips without that slow-quicksand feel. Our sleep specialists at Mancini's Sleepworld would love to put this next to a few other options so you can feel the coil response and surface softness side by side before you decide.

COMFORT AND FEEL: Medium feel with a responsive gel memory foam surface that supports without heavy sinking.

SIZE: This Cal King sized mattress is built for couples or tall sleepers who want generous room to spread out without giving up support.

BEST SLEEP MATCH: Back and combination sleepers will find this medium hybrid mattress in Cal King holds the hips level whether they're on their back or shifted to their side. The responsive coil base makes repositioning feel easy rather than effortful.

BEST FOR: Ideal for sleepers who run warm at night, wake up with hip or shoulder pressure, or need a coil system that absorbs a partner's movement.

CONSTRUCTION SPECIFICATIONS: The surface quilt panel uses a heavyweight cold-touch knit that keeps the cover from trapping heat. Medium Soft comfort foam cushions the first point of contact. Gel-infused memory foam beneath it pulls heat away and softens pressure at the hips and shoulders. Fabric-wrapped pocketed coils isolate motion and keep the spine level. High-density support foam at the base keeps the mattress from softening prematurely. Foams are CertiPUR-US certified.

SETUP AND COMPATIBILITY: Delivered flat with professional in-home setup available. Compatible with adjustable bases, platform frames, and box springs. No tools needed for setup.

NOT A FIT FOR: Sleepers who prefer a deep plush or pillow-top feel may find the medium surface too firm for side-only sleeping at lighter body weights.

YOUR SLEEP, BACKED BY US

Every mattress purchase at Mancini's Sleepworld comes with a 120-night comfort guarantee and our Best Price Guarantee. Add a premium mattress protector at the time of purchase and you can choose to upgrade your guarantee to a full 365 nights. Come try this Cal King in any Mancini's Sleepworld showroom before you buy, and let our sleep specialists walk you through it. Free next-day delivery, professional in-home setup, and flexible financing are all available.

Features

  • Suitable For Adjustable Base
  • Motion Separation
  • Cooling Technology
  • Edge Support
  • SleepMatch: blue
Blue color code are mattresses of medium firm support. Most back sleepers and some side sleepers will find the beds measured as blue are best for them. Find Your Match
Mancini's Sleepworld Onyx Medium Mattress 13" image number

Mancini's Sleepworld Onyx Medium Mattress 13"

Price reduced from MSRP  $1,819.99 to Save 23% $1,399.99
Price reduced from MSRP  $1,819.99 to Save 23% $1,399.99
Cal King

Features

  • SKU: BRK-ONY-6M-MED-25
  • MPN: 25WICRAFM_FP67
  • GTIN: 810146419334
  • Brand: Mancini's
  • Collection: Sleepworld
  • Type: Innerspring
  • Mattress In A Box: No
  • Firmness: Medium
  • Height: 13
  • Length: 84
  • Width: 72
  • Shipping Height: 13
  • Shipping Width: 84
  • Shipping Length: 72
  • Warranty: 10 Year
  • Cover Material: Polyester Knit
  • Quilting Layers: 2 H.D. Super Soft Quilt Foam,3/4 H.D Gel Infused M - Foam
  • Comfort Layers: 1'' Med-Firm H.D. Foam + 1.5'' Extra Firm H.D. Support Foam
  • Support System: 8'' 840 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