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\n \n \n \n\n \n \n\n \n \n \n \n \n Price reduced from\n \n MSRP \n $839.00\n\n\n \n to\n \n \n \n \n \n \n \n \n Save 29%\n \n \n\n \n\n \n \n \n \n \n \n \n $595.00\n\n\n \n \n \n\n\n\n
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\n \n \n \n\n \n \n\n \n \n \n \n \n Price reduced from\n \n MSRP \n $839.00\n\n\n \n to\n \n \n \n \n \n \n \n \n Save 29%\n \n \n\n \n\n \n \n \n \n \n \n \n $595.00\n\n\n \n \n \n\n\n\n
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\n \n \n \n\n \n \n\n \n \n \n \n \n Price reduced from\n \n MSRP \n $839.00\n\n\n \n to\n \n \n \n \n \n \n \n \n Save 29%\n \n \n\n \n\n \n \n \n \n \n \n \n $595.00\n\n\n \n \n \n\n\n\n
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\n \n \n \n\n \n \n\n \n \n \n \n \n Price reduced from\n \n MSRP \n $993.00\n\n\n \n to\n \n \n \n \n \n \n \n \n Save 30%\n \n \n\n \n\n \n \n \n \n \n \n \n $695.00\n\n\n \n \n \n\n\n\n
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\n \n \n \n\n \n \n\n \n \n \n \n \n Price reduced from\n \n MSRP \n $1,564.00\n\n\n \n to\n \n \n \n \n \n \n \n \n Save 30%\n \n \n\n \n\n \n \n \n \n \n \n \n $1,095.00\n\n\n \n \n \n\n\n\n
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\n \n \n \n\n \n \n\n \n \n \n \n \n Price reduced from\n \n MSRP \n $1,564.00\n\n\n \n to\n \n \n \n \n \n \n \n \n Save 30%\n \n \n\n \n\n \n \n \n \n \n \n \n $1,095.00\n\n\n \n \n \n\n\n\n
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\n \n \n \n\n \n \n\n \n \n \n \n \n Price reduced from\n \n MSRP \n $993.00\n\n\n \n to\n \n \n \n \n \n \n \n \n Save 30%\n \n \n\n \n\n \n \n \n \n \n \n \n $695.00\n\n\n \n \n \n\n\n\n
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\n \n \n \n\n \n \n\n \n \n \n \n \n Price reduced from\n \n MSRP \n $993.00\n\n\n \n to\n \n \n \n \n \n \n \n \n Save 30%\n \n \n\n \n\n \n \n \n \n \n \n \n $695.00\n\n\n \n \n \n\n\n\n
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Casper Slate Firm Mattress 10.5\" · Twin

The Casper Slate Firm Mattress 10.5\" is a firm mattress built for back sleepers and stomach sleepers who need a surface that holds them up rather than lets them sink. It is Casper's entry-point all-foam mattress, and it earns its place in the lineup with a firm mattress for back pain relief that is easy to live with every night. At 10.5 inches, it sits at a practical height that works with most standard bed frames and foundations. If you want to feel it before you commit, our sleep specialists at Mancini's Sleepworld are happy to put this one next to comparable options so you can sense the difference for yourself.

COMFORT AND FEEL: A firm, lightly responsive foam surface that holds the lumbar in place without feeling rigid.

SIZE: This twin sized mattress is a great fit for kids' rooms, first apartments, and solo sleepers who want firm support in a compact footprint.

BEST SLEEP MATCH: Best suited for back sleepers and stomach sleepers. The firm feel keeps the hips level and the lower back supported, which is exactly what those positions need.

BEST FOR: Ideal for sleepers who need extra-firm support, tend to feel unsupported on softer foam, or wake up with lower back stiffness.

CONSTRUCTION SPECIFICATIONS: The top layer is Breathe Flex Foam™, an open-cell foam that allows air to move through as you sleep. A middle transition layer eases the shift from surface to base. The firm Casper Core base holds its shape over time, keeping the mattress from softening out in the center.

SETUP AND COMPATIBILITY: Arrives rolled and compressed; expands within a few hours with no tools needed. Compatible with adjustable bases, platform frames, and slatted foundations. Box spring not recommended.

NOT A FIT FOR: Side sleepers who need hip and shoulder cushioning may find this feel too firm. Sleepers who prefer a slow, deep-sink sensation will not find it here.

YOUR SLEEP, BACKED BY US
Every mattress at Mancini's Sleepworld comes with a 120-night comfort guarantee as our base commitment, because we are confident you will love what you bring home. Add a premium mattress protector at the time of purchase and you can extend that to a full 365 nights. Our Rest Easy Promise also includes a Best Price Guarantee, flexible financing, and free next-day delivery with in-home professional setup available. Come try this mattress in any of our locations before you buy.

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Casper Slate Firm Mattress 10.5\" Queen

The Casper Slate Firm Mattress 10.5\" is a firm mattress built for back and stomach sleepers who need consistent, structured support without waking up feeling like the mattress gave up on them. Three layers of foam work together to keep your spine lifted and your sleep surface stable night after night. The Breathe Flex Foam comfort layer stays responsive so you're never locked in, while the stretch knit cover adds just enough give to let the foam do its job. Stop by any Mancini's Sleepworld location and our sleep specialists will set this next to every competing option so you can feel the difference yourself.

COMFORT AND FEEL: Firm and responsive, with surface bounce that supports back and stomach sleepers without stiffness.

SIZE: This queen sized mattress is a versatile choice for couples or single adults who want room to stretch out.

BEST SLEEP MATCH: Best for back and stomach sleepers. The firm mattress feel keeps the hips from sinking too deep, holding your spine in a neutral line all night without fighting the mattress to find your position.

BEST FOR: Ideal for sleepers who need firm mattress support for back pain relief, prefer a responsive surface over slow memory foam, or tend to sleep hot.

CONSTRUCTION SPECIFICATIONS: The Breathe Flex Foam top layer is open and responsive, releasing heat instead of trapping it. Beneath that, a foam transition layer absorbs pressure so the firm base does not feel punishing. The Casper Core base foam keeps the mattress from softening out over time. The foam is CertiPUR-US certified.

SETUP AND COMPATIBILITY: The Slate arrives rolled and compressed in a box, expands fully within a few hours, and is compatible with adjustable bases, platform frames, and box springs. No tools needed.

NOT A FIT FOR: Sleepers who prefer a plush or contouring feel will find this too firm. Not recommended for side sleepers with significant hip or shoulder pressure needs.

YOUR SLEEP, BACKED BY US

At Mancini's Sleepworld, every mattress purchase comes backed by our Rest Easy Promise, which includes a 120-night comfort guarantee, free next-day delivery, in-home professional setup, flexible financing, and our Best Price Guarantee. You can try this mattress in any of our stores before you buy. Add a premium mattress protector at the time of purchase and you can choose to extend your comfort guarantee to a full 365 nights.

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Casper Slate Firm Mattress 10.5\" · Twin

The Casper Slate Firm Mattress 10.5\" is a firm mattress built for back sleepers and stomach sleepers who need a surface that holds them up rather than lets them sink. It is Casper's entry-point all-foam mattress, and it earns its place in the lineup with a firm mattress for back pain relief that is easy to live with every night. At 10.5 inches, it sits at a practical height that works with most standard bed frames and foundations. If you want to feel it before you commit, our sleep specialists at Mancini's Sleepworld are happy to put this one next to comparable options so you can sense the difference for yourself.

COMFORT AND FEEL: A firm, lightly responsive foam surface that holds the lumbar in place without feeling rigid.

SIZE: This twin sized mattress is a great fit for kids' rooms, first apartments, and solo sleepers who want firm support in a compact footprint.

BEST SLEEP MATCH: Best suited for back sleepers and stomach sleepers. The firm feel keeps the hips level and the lower back supported, which is exactly what those positions need.

BEST FOR: Ideal for sleepers who need extra-firm support, tend to feel unsupported on softer foam, or wake up with lower back stiffness.

CONSTRUCTION SPECIFICATIONS: The top layer is Breathe Flex Foam™, an open-cell foam that allows air to move through as you sleep. A middle transition layer eases the shift from surface to base. The firm Casper Core base holds its shape over time, keeping the mattress from softening out in the center.

SETUP AND COMPATIBILITY: Arrives rolled and compressed; expands within a few hours with no tools needed. Compatible with adjustable bases, platform frames, and slatted foundations. Box spring not recommended.

NOT A FIT FOR: Side sleepers who need hip and shoulder cushioning may find this feel too firm. Sleepers who prefer a slow, deep-sink sensation will not find it here.

YOUR SLEEP, BACKED BY US
Every mattress at Mancini's Sleepworld comes with a 120-night comfort guarantee as our base commitment, because we are confident you will love what you bring home. Add a premium mattress protector at the time of purchase and you can extend that to a full 365 nights. Our Rest Easy Promise also includes a Best Price Guarantee, flexible financing, and free next-day delivery with in-home professional setup available. Come try this mattress in any of our locations before you buy.

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Why this Mattress?

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  • \n Firm foam support keeps the spine aligned all night\n
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  • \n Breathe Flex Foam™ top layer adds responsive bounce\n
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Casper Slate Firm Mattress 10.5"

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\n \n \n \n\n \n \n\n \n \n \n \n \n Price reduced from\n \n MSRP \n $839.00\n\n\n \n to\n \n \n \n \n \n \n \n \n Save 29%\n \n \n\n \n\n \n \n \n \n \n \n \n $595.00\n\n\n \n \n \n\n\n\n
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