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Extra Firm
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On Sale
Mancini's Sleepworld Granite Bay Extra Firm Mattress 13"-Cal King
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In Stock
Mancini's Sleepworld Granite Bay Extra Firm Mattress 13"
Why this Mattress?
- Built for firm back pain relief without sacrificing temperature comfort
- Graphite, copper, and titanium memory foam draws heat away
- Ultra high-density foam keeps lumbar lifted through the night
- Cold stretch knit quilt panel sleeps noticeably cooler
- Dense foam base resists softening for long-term durability
Overview
Mancini's Sleepworld Granite Bay Extra Firm Mattress 13" Cal King
The Mancini's Sleepworld Granite Bay Extra Firm Mattress 13" is a foam mattress built for the sleeper who needs serious spinal support and wakes up stiff without it. If you've tried firmer options that still felt too soft after a few months, the Granite Bay is engineered differently. The support core is arranged with ultra high-density firm memory foam layers infused with graphite, copper, and titanium, sitting above a super high-density foam base that holds its shape and its firmness over time. Stop by any Mancini's Sleepworld location and our sleep specialists will put this next to every competing option so you can feel the difference yourself.
COMFORT AND FEEL: Extra firm with a flat, lifted surface that resists sinking under heavier bodyweight.
SIZE: This Cal King sized mattress is 72 inches wide by 84 inches long, ideal for taller sleepers or couples who want extra legroom without sacrificing a firm support foundation.
BEST SLEEP MATCH: Built for stomach sleepers and back sleepers who need a firm mattress for back pain relief. The unyielding surface keeps hips from dropping and holds the spine in a neutral line from shoulder to heel.
BEST FOR: Ideal for sleepers who need strong lumbar support, run warm at night, or have found that softer mattresses leave them achy by morning.
CONSTRUCTION SPECIFICATIONS: The cold stretch knit quilt panel moves heat away from the body from the moment you lie down. Beneath it, ultra high-density memory foam infused with graphite, copper, and titanium works to dissipate warmth while contouring firmly to pressure points. The super high-density foam base is built to hold its structure night after night.
SETUP AND COMPATIBILITY: Works with an adjustable base, platform frame, or box spring. Delivered flat with professional in-home setup included. No tools needed on your end.
NOT A FIT FOR: Side sleepers or those with hip and shoulder sensitivity who need pressure relief. Sleepers who prefer any degree of cradling or body-contouring softness.
YOUR SLEEP, BACKED BY US
Every mattress purchase at Mancini's Sleepworld is backed by our Rest Easy Promise, which includes a 120-night comfort guarantee, a Best Price Guarantee, free next-day delivery, and flexible financing. Want a full year to be certain? Add a premium mattress protector at purchase and your guarantee extends to 365 nights. Come try this one in person at any Mancini's Sleepworld showroom. Our sleep specialists are ready when you are.
- SleepMatch: red
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-6M-XF-25
- MPN: 25WI13ALPF_FP67
- GTIN: 810191940821
- Brand: Mancini's
- Collection: Sleepworld
- Type: Foam
- Mattress In A Box: No
- Firmness: Extra Firm
- Height: 13
- Length: 84
- Width: 72
- Shipping Height: 13
- Shipping Width: 84
- Shipping Length: 72
- Warranty: 10 Year
- Cover Material: Polyethylene & Poly Blend
- Quilting Layers: Smooth Top
- Comfort Layers: 1'' 4 / 13 Titanium M-Foam,2'' 3.6 / 22 Firm H.D M-Foam
- Support System: 10.0 1.8 / 36 H.D Base Foam
Specification
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Suitable For Adjustable Base: Yes
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Motion Separation: Yes