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\n\n\n", "length": "80", "depth": "60", "sizeSelect": "Size: 60″ x 80″" } ], "resetUrl": "https://www.sleepworld.com/on/demandware.store/Sites-Sleepworld-Site/en_US/Product-Variation?dwvar_BRK-DIA-5M-XF-25-config_size=&pid=BRK-DIA-5M-XF-25-config&quantity=1" } ], "longDescription": "

Mancini's Sleepworld Diamond Extra Firm Mattress 11\" Twin

The Mancini's Sleepworld Diamond Extra Firm Mattress 11\" is an innerspring mattress built for back and stomach sleepers who need serious, unapologetic support. If you have ever woken up with your hips sinking and your spine twisted, this is the mattress that stops that from happening. The coil system responds precisely where your body is heaviest, keeping you level from shoulders to heels. Every component is CertiPUR-US certified, so the foam you are sleeping on has been tested for the things that matter. Stop by any Mancini's Sleepworld location and a sleep specialist will walk you through every option so you can feel the difference for yourself.

COMFORT AND FEEL: Extra firm surface with minimal give and strong, flat spinal support throughout.

SIZE: This twin sized mattress is a focused, space-efficient choice for single sleepers, growing teens, and spare rooms that need a no-compromise support option.

BEST SLEEP MATCH: Back and stomach sleepers who need a firm mattress for back pain relief will feel the difference here. The flat, unyielding surface keeps the hips from dropping, so your spine stays aligned rather than bent.

BEST FOR: Ideal for sleepers who need firm lumbar support, tend to sleep on their back or stomach, or have found medium mattresses simply too soft.

CONSTRUCTION SPECIFICATIONS: The quilt panel is a heavyweight 4-way stretch polyester knit filled with firm support foam that flexes without losing shape. Beneath it, 720 pocketed coils wrapped in fabric absorb motion so a restless partner does not wake you. A 1.5-inch extra firm high-density foam comfort layer sits over a shock-absorbing high-density base. That base layer is what keeps this mattress from softening out after the first few years.

SETUP AND COMPATIBILITY: Arrives flat and delivered by Mancini's Sleepworld with professional in-home setup included. Compatible with adjustable bases, platform frames, and traditional box springs.

NOT A FIT FOR: Side sleepers who need hip and shoulder cushioning or anyone who prefers even a mildly plush feel will find this too firm for comfort.

YOUR SLEEP, BACKED BY US

Every mattress purchased at Mancini's Sleepworld comes with a 120-night comfort guarantee and our Rest Easy Promise, which includes free next-day delivery, professional in-home setup, and our Best Price Guarantee. Want a full year to decide? Add a premium mattress protector at the time of purchase and your guarantee extends to 365 nights. Flexible financing is available, and you can try this mattress in person at any Mancini's Sleepworld showroom before you buy.

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\n\n\n", "images": { "small": [ { "alt": "Mancini's Sleepworld Low Profile Foundation", "url": "https://www.sleepworld.com/dw/image/v2/bkcl_prd/on/demandware.static/-/Sites-sleepworld-products-catalog/default/dweb7d86c8/images/hi-res/BRK-/BRK-FOU-5LB-24/BRK-FOU-3LB-24_1.jpg?sw=140&sh=93", "title": "Mancini's Sleepworld Low Profile Foundation" } ] }, "availability": { "messages": [ "In Stock" ], "inStockDate": null }, "available": true, "title": "Add Foundation {0}" }, { "uuid": "2b5e5ed60b0052fc8335b810fc", "id": "ISS-ADJ-ELV2-3B", "productName": "Sleep Partner ZZZ Elevate 2.0 Adjustable Base", "productType": "variant", "brand": "Sleep Partner ZZZ", "mattsize": "Twin", "sleepMatch": null, "firmness": null, "type": "Adjustable Foundations", "height": "14.5", "videourl": null, "consfeatures": [ "Custom head & foot adjustment for comfort, Wireless remote with Zero-G & Anti-Snore presets, 850 lb weight capacity for strength, Adjustable 12'' legs (9''+3'') with zero clearance design, Built to last with dependable warranty" ], "price": { "sales": { "value": 799.99, "currency": "USD", "formatted": "$799.99", "decimalPrice": "799.99" }, "list": { "value": 1039.99, "currency": "USD", "formatted": "$1,039.99", "decimalPrice": "1039.99" }, "isSale": true, "percentDiscount": 23, "renderedPrice": "
\n \n \n \n\n \n \n\n \n \n \n \n \n Price reduced from\n \n MSRP \n $1,039.99\n\n\n \n to\n \n \n \n \n \n \n \n \n Save 23%\n \n \n\n \n\n \n \n \n \n \n \n \n $799.99\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 $1,039.99\n\n\n \n to\n \n \n \n \n \n \n \n \n Save 23%\n \n \n\n \n\n \n \n \n \n \n \n \n $799.99\n\n\n \n \n \n\n\n\n
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Mancini's Sleepworld Diamond Extra Firm Mattress 11\" · Queen

The Mancini's Sleepworld Diamond Extra Firm Mattress 11\" is a hybrid mattress built for back and stomach sleepers who need reliable, no-give support from the first night through the last. An extra firm mattress for back pain relief is exactly what this bed delivers: a flat, stable sleep surface that keeps the lumbar lifted so you stop waking up stiff. The coil system is wrapped in fabric to absorb motion independently, so one restless sleeper stays on their side of the bed. Stop by any Mancini's Sleepworld location and our sleep specialists will put this mattress next to every competing option so you can feel the difference for yourself.

COMFORT AND FEEL: Extra firm and flat, with zero sink and strong lumbar push-back throughout the night.

SIZE: This queen sized mattress is ideal for couples or solo sleepers who need full back support across a 60\" x 80\" surface.

BEST SLEEP MATCH: Best suited for stomach and back sleepers who need a firm mattress for back sleepers. The unyielding surface keeps the hips from dropping, which is exactly what those positions need to stay aligned.

BEST FOR: Ideal for sleepers who carry weight in the midsection, wake up with lower back stiffness, or need a mattress that simply will not soften out over time.

CONSTRUCTION SPECIFICATIONS: The stretch knit quilt panel flexes with movement while the firm foam layers beneath it keep the surface flat. A fabric-wrapped coil system built with super heavy-gauge wire holds firm under pressure without transferring motion. Super high-density upholstery-grade foam in the base resists compression and keeps this mattress feeling the same in year three as it did on day one. Foams are CertiPUR-US® certified.

SETUP AND COMPATIBILITY: Works with an adjustable base, platform frame, or box spring. Delivered flat with in-home professional setup included and no tools required.

NOT A FIT FOR: Side sleepers or anyone with hip and shoulder pressure sensitivity. This mattress is built to resist, not contour.

YOUR SLEEP, BACKED BY US

Every mattress purchase at Mancini's Sleepworld comes with a 120-night comfort guarantee, free next-day delivery, in-home professional setup, and flexible financing. Add a premium mattress protector at the time of purchase and you can upgrade that guarantee to a full 365 nights. You can also try before you buy at any Mancini's Sleepworld showroom, and our Best Price Guarantee means you will not find it for less. Our sleep specialists are here when you are ready.

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Mancini's Sleepworld Diamond Extra Firm Mattress 11\" Twin

The Mancini's Sleepworld Diamond Extra Firm Mattress 11\" is an innerspring mattress built for back and stomach sleepers who need serious, unapologetic support. If you have ever woken up with your hips sinking and your spine twisted, this is the mattress that stops that from happening. The coil system responds precisely where your body is heaviest, keeping you level from shoulders to heels. Every component is CertiPUR-US certified, so the foam you are sleeping on has been tested for the things that matter. Stop by any Mancini's Sleepworld location and a sleep specialist will walk you through every option so you can feel the difference for yourself.

COMFORT AND FEEL: Extra firm surface with minimal give and strong, flat spinal support throughout.

SIZE: This twin sized mattress is a focused, space-efficient choice for single sleepers, growing teens, and spare rooms that need a no-compromise support option.

BEST SLEEP MATCH: Back and stomach sleepers who need a firm mattress for back pain relief will feel the difference here. The flat, unyielding surface keeps the hips from dropping, so your spine stays aligned rather than bent.

BEST FOR: Ideal for sleepers who need firm lumbar support, tend to sleep on their back or stomach, or have found medium mattresses simply too soft.

CONSTRUCTION SPECIFICATIONS: The quilt panel is a heavyweight 4-way stretch polyester knit filled with firm support foam that flexes without losing shape. Beneath it, 720 pocketed coils wrapped in fabric absorb motion so a restless partner does not wake you. A 1.5-inch extra firm high-density foam comfort layer sits over a shock-absorbing high-density base. That base layer is what keeps this mattress from softening out after the first few years.

SETUP AND COMPATIBILITY: Arrives flat and delivered by Mancini's Sleepworld with professional in-home setup included. Compatible with adjustable bases, platform frames, and traditional box springs.

NOT A FIT FOR: Side sleepers who need hip and shoulder cushioning or anyone who prefers even a mildly plush feel will find this too firm for comfort.

YOUR SLEEP, BACKED BY US

Every mattress purchased at Mancini's Sleepworld comes with a 120-night comfort guarantee and our Rest Easy Promise, which includes free next-day delivery, professional in-home setup, and our Best Price Guarantee. Want a full year to decide? Add a premium mattress protector at the time of purchase and your guarantee extends to 365 nights. Flexible financing is available, and you can try this mattress in person at any Mancini's Sleepworld showroom before you buy.

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\n Why this Mattress?\n

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  • \n Built for firm back pain relief, no give where you need none\n
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  • \n Fabric-wrapped pocketed coil system resists motion transfer\n
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  • \n Super high-density upholstery-grade foam holds its shape for years\n
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Mancini's Sleepworld Diamond Extra Firm Mattress 11"

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\n \n \n \n\n \n \n\n \n \n \n \n \n Price reduced from\n \n MSRP \n $649.99\n\n\n \n to\n \n \n \n \n \n \n \n \n Save 23%\n \n \n\n \n\n \n \n \n \n \n \n \n $499.99\n\n\n \n \n \n\n\n\n
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\n", "productUrl": "/mancini%27s-sleepworld-diamond-extra-firm-mattress-11in/BRK-DIA-3M-XF-25.html" }