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Firm
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On Sale
Casper One Firm Mattress 11"-Cal King
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In Stock
Casper One Firm Mattress 11"
Why this Mattress?
- Firm feel keeps hips lifted, spine aligned
- Breathe Flex Foam™ top layer adds gentle bounce
- Align Memory Foam cradles without sinking you in
- Casper Core base resists softening over time
- Every foam layer built for all-night breathability
Overview
Casper One Firm Mattress 11" Cal King
The Casper One Firm Mattress 11" is an all-foam mattress built for back and stomach sleepers who want a firm mattress for back pain relief without sacrificing the body-contouring comfort that keeps them asleep through the night. Three purposefully stacked foam layers work together to hold the spine in a neutral position while taking the edge off pressure points at the hips and lower back. It delivers a clean, no-fuss sleep surface that does exactly what a firm all-foam mattress is supposed to do. Stop by any Mancini's Sleepworld location and our sleep specialists will put this right next to the competing options so you can feel the difference for yourself.
COMFORT AND FEEL: Firm and responsive with light contouring and steady lumbar support.
SIZE: This California King sized mattress is a generous fit for tall sleepers or couples who want extra length without giving up personal space.
BEST SLEEP MATCH: Back and stomach sleepers will find this firm mattress for back sleepers especially satisfying. The firm feel keeps the hips from dropping and the lower back from overarching through the night.
BEST FOR: Ideal for sleepers who need firm lumbar support, tend to sink too deep into softer foams, or wake up with lower back stiffness.
CONSTRUCTION SPECIFICATIONS: The Breathe Flex Foam™ top layer brings a responsive, bouncy feel while letting air move through freely. Below it, Align Memory Foam gently contours to the body's curves to ease pressure without that stuck-in feeling. The firm Casper Core base holds everything stable so the mattress stays supportive long after the first year.
SETUP AND COMPATIBILITY: Arrives rolled and compressed; expands within hours, no tools needed. Compatible with adjustable bases, platform frames, and box springs.
NOT A FIT FOR: Side sleepers who need deep shoulder and hip cushioning may find this feel too firm. Those who prefer a plush or pillow-top surface will want to explore other options.
YOUR SLEEP, BACKED BY US
Every mattress purchase at Mancini's Sleepworld includes a 120-night comfort guarantee, backed by the Rest Easy Promise. Add a premium mattress protector at checkout and you can choose to extend that to a full 365 nights. You also get our Best Price Guarantee, free next-day delivery with professional in-home setup, and flexible financing options. Come try this mattress in one of our stores before you decide.
- 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: CAS-ONE-6M-FM-24
- MPN: 950-000151-006
- GTIN: 192472031399
- Brand: Casper
- Collection: One
- Type: Memory Foam
- Mattress In A Box: Yes
- Firmness: Firm
- Height: 11
- Length: 84
- Width: 72
- Shipping Height: 42
- Shipping Width: 17.5
- Shipping Length: 17.5
- Warranty: 10 Year Limited
- Weight Capacity: 600
- Cover Material: 98% Polyester, 2% Spandex
- Quilting Layers: Polyurethane Foam
- Comfort Layers: Polyurethane Foam
- Support System: Memory Foam
Specification
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Suitable For Adjustable Base: Yes
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Motion Separation: Yes
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