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Firm
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On Sale
Mancini's Sleepworld Granite Bay Firm Mattress 13"-Eastern King
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In Stock
Mancini's Sleepworld Granite Bay Firm Mattress 13"
Why this Mattress?
- Built for back sleepers who want firm support without sleeping hot
- Graphite, copper, and titanium memory foam draws heat away from the body
- Cold-stretch knit quilt panel keeps surface temperature neutral
- Ultra high-density foam layers hold the lumbar in place all night
- Dense base foam resists softening so support stays consistent for years
Overview
Mancini's Sleepworld Granite Bay Firm Mattress 13" · Eastern King
The Mancini's Sleepworld Granite Bay Firm Mattress 13" is a firm mattress built for sleepers who need a firm mattress for back pain relief and wake up stiff without real lumbar support underneath them. The support core is carefully layered with ultra high-density medium-firm and firm memory foam infused with graphite, copper, and titanium, sitting above a super high-density base foam built for lasting structure. It sleeps notably cooler than standard memory foam, holds spinal alignment through the night, and holds up well over time. Stop by any Mancini's Sleepworld location and a sleep specialist will walk you through exactly why this one feels different from the moment you lie down.
COMFORT AND FEEL: Firm foam feel with close body contact and steady lumbar lift throughout the night.
SIZE: This Eastern King sized mattress is 76 by 80 inches, giving couples and solo sleepers who want full stretch-out room plenty of space to move freely.
BEST SLEEP MATCH: Built for back sleepers, and a solid fit for stomach sleepers looking for a firm mattress for back sleepers who want the spine held flat and the hips from sinking forward. The firm foam layers keep everything in line.
BEST FOR: Ideal for sleepers who run warm at night, wake up with lower back tension, or have tried softer mattresses and found they never wake up feeling rested.
CONSTRUCTION SPECIFICATIONS: The cold-stretch knit quilt panel at the surface pulls warmth away so you are not sleeping on a heat trap. Graphite, copper, and titanium work through the memory foam layers to keep temperature neutral. The ultra high-density foam contours without deep sink. The super high-density base holds everything firm so the mattress does not compress out after regular use.
SETUP AND COMPATIBILITY: Works with adjustable bases, platform frames, and box springs. Delivered flat with professional in-home setup included, no tools or assembly needed on your end.
NOT A FIT FOR: Sleepers who prefer a plush or pressure-cradling feel will find this too firm. Side sleepers with sensitive hips or shoulders may want a softer option.
YOUR SLEEP, BACKED BY US
Every mattress at Mancini's Sleepworld comes with a 120-night comfort guarantee as standard, backed by the Rest Easy Promise and our Best Price Guarantee. Add a premium mattress protector at the time of purchase and you can choose to extend that to a full 365 nights. Come try the Granite Bay Firm in any of our stores before you buy. Free next-day delivery, professional in-home setup, and flexible financing are all available.
- SleepMatch: blue
Rest Easy Promise
Our promise to you.
- 365-Night Comfort Guarantee with purchase of a premium mattress protector
- Best Price Guarantee Find it lower and we’ll match it.
- Free Next-Day Delivery We’ll deliver to your door, set-up available.
- Double-Your-Warranty We match the manufacturer’s warranty.
Features
- SKU: BRK-GRA-E6M-FM-25
- MPN: 25WI13ALPMF_FP66
- GTIN: 810191940876
- Brand: Mancini's
- Collection: Sleepworld
- Type: Foam
- Mattress In A Box: No
- Firmness: Firm
- Height: 13
- Length: 80
- Width: 76
- Shipping Height: 13
- Shipping Width: 80
- Shipping Length: 76
- Warranty: 10 Year
- Cover Material: Polyethylene & Poly Blend
- Quilting Layers: Smooth Top
- Comfort Layers: 1'' 4.0 / 13 Titanium M-Foam,2'' 3/10 titanium M -Foam
- Support System: 2.0 1.8 / 18 transition over 8.0 1.8 / 36 H.D Base Foam
Specification
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Suitable For Adjustable Base: Yes
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Motion Separation: Yes