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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-LF-25-config_size=&pid=BRK-DIA-5M-LF-25-config&quantity=1" } ], "longDescription": "

Mancini's Sleepworld Diamond Luxury Firm Mattress 11.5\" Twin

The Mancini's Sleepworld Diamond Luxury Firm Mattress 11.5\" is an innerspring mattress built for back sleepers who need real spinal support without waking up feeling like they slept on a board. A heavyweight 4-way stretch knit cover wraps over a super soft quilt foam layer, letting the surface give just enough to take pressure off your hips and shoulders. Beneath that, 790 individually wrapped pocketed coils respond to your body independently, keeping the spine lifted all night. High-density medium firm comfort foam and a shock-absorbing base round out a build that is made to hold up, not just feel good on day one. Stop by any Mancini's Sleepworld location and a sleep specialist will put this right next to competing options so you can feel the difference yourself.

COMFORT AND FEEL: Luxury firm feel with gentle surface cushion and steady lumbar support underneath.

SIZE: This twin sized mattress is a natural fit for a solo sleeper, teen bedroom, or a compact guest room.

BEST SLEEP MATCH: Best for back sleepers and some side sleepers who want a luxury firm mattress for back pain relief. The quilted surface softens the firmness just enough so your hips don't bear the full load.

BEST FOR: Ideal for sleepers who need consistent lumbar support, want a coil mattress that limits motion transfer, or need a durable build that won't soften out early.

CONSTRUCTION SPECIFICATIONS: The stretch knit surface moves with you and cushions pressure points on contact. Super soft quilt foam sits directly beneath the cover for an immediate gentle feel. Eight inches of 790 pocketed coils respond individually, keeping your spine properly aligned. A high-density comfort foam layer and shock-absorbing base hold the mattress structure long-term. Foams are CertiPUR-US certified.

SETUP AND COMPATIBILITY: Delivered flat with white-glove in-home setup included. Compatible with adjustable bases, platform frames, and box springs. No tools needed.

NOT A FIT FOR: Sleepers who prefer a plush or pillow-top feel may find this too firm. Not recommended for combination sleepers who need deep contouring through the hips.

YOUR SLEEP, BACKED BY US

Every mattress at Mancini's Sleepworld comes with a 120-night comfort guarantee and the Rest Easy Promise, so you can buy with confidence. Add a premium mattress protector at the time of purchase and you can extend that to a full 365 nights. You also get the Best Price Guarantee, free next-day delivery, in-home professional setup, and flexible financing. Come try this mattress in person at any Mancini's Sleepworld showroom before you decide.

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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/dwf46972f1/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", "sleepMatch": null, "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": "
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Mancini's Sleepworld Diamond Luxury Firm Mattress 11.5\" · Queen

The Mancini's Sleepworld Diamond Luxury Firm Mattress 11.5\" is an innerspring mattress built for back sleepers and combination sleepers who want real spinal support without giving up surface comfort. This is the mattress for the person who has tried plush options and woke up sore, but found a traditional firm too unforgiving at the hips. The Diamond Luxury Firm threads that needle with a quilted knit comfort layer that takes the edge off, and a pocketed coil system that handles the real structural work underneath. If you want to feel what this mattress does for your body before you commit, our sleep specialists at any Mancini's Sleepworld location will lay it next to every competing option in the store so you can decide with confidence.

COMFORT AND FEEL: Luxury firm feel with gentle quilted cushioning and firm, uplift-focused support beneath.

SIZE: This queen sized mattress is a smart fit for couples or solo sleepers who want full freedom of movement at night.

BEST SLEEP MATCH: Back sleepers and some side sleepers do best here. The luxury firm feel keeps the lumbar lifted and supported without locking the hips in place. A solid match for the firm mattress for back pain relief seeker who still wants a cushioned surface.

BEST FOR: Ideal for sleepers who need consistent spinal alignment, prefer a firmer feel without a hard surface, or share a bed and want less motion disturbance.

CONSTRUCTION SPECIFICATIONS: The stretch knit cover moves with you and softens the first point of contact. Beneath it, a layer of super soft quilt foam takes the initial edge off firmness. Medium firm high-density comfort foam then handles pressure at the hips and shoulders. The 8-inch 790 pocketed coil system responds individually so movement on one side stays there. A shock-absorbing high-density base foam anchors the whole system and resists softening over time. Foams are CertiPUR-US® certified.

SETUP AND COMPATIBILITY: Delivered flat with professional in-home setup included. Compatible with adjustable bases, platform frames, and standard box springs. No tools needed on your end.

NOT A FIT FOR: Sleepers who prefer a plush or pressure-cradling feel may find this surface too firm. Not recommended for strict stomach sleepers who need a very flat, ultra-firm profile.

YOUR SLEEP, BACKED BY US

Every mattress purchase at Mancini's Sleepworld includes a 120-night comfort guarantee backed by our Rest Easy Promise, plus a Best Price Guarantee so you never overpay. Add a premium mattress protector at checkout and you can choose to extend that guarantee to a full 365 nights. We offer free next-day delivery, professional in-home setup, and flexible financing. Come try this mattress in person at any Mancini's Sleepworld showroom before you decide.

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Mancini's Sleepworld Diamond Luxury Firm Mattress 11.5\" Twin

The Mancini's Sleepworld Diamond Luxury Firm Mattress 11.5\" is an innerspring mattress built for back sleepers who need real spinal support without waking up feeling like they slept on a board. A heavyweight 4-way stretch knit cover wraps over a super soft quilt foam layer, letting the surface give just enough to take pressure off your hips and shoulders. Beneath that, 790 individually wrapped pocketed coils respond to your body independently, keeping the spine lifted all night. High-density medium firm comfort foam and a shock-absorbing base round out a build that is made to hold up, not just feel good on day one. Stop by any Mancini's Sleepworld location and a sleep specialist will put this right next to competing options so you can feel the difference yourself.

COMFORT AND FEEL: Luxury firm feel with gentle surface cushion and steady lumbar support underneath.

SIZE: This twin sized mattress is a natural fit for a solo sleeper, teen bedroom, or a compact guest room.

BEST SLEEP MATCH: Best for back sleepers and some side sleepers who want a luxury firm mattress for back pain relief. The quilted surface softens the firmness just enough so your hips don't bear the full load.

BEST FOR: Ideal for sleepers who need consistent lumbar support, want a coil mattress that limits motion transfer, or need a durable build that won't soften out early.

CONSTRUCTION SPECIFICATIONS: The stretch knit surface moves with you and cushions pressure points on contact. Super soft quilt foam sits directly beneath the cover for an immediate gentle feel. Eight inches of 790 pocketed coils respond individually, keeping your spine properly aligned. A high-density comfort foam layer and shock-absorbing base hold the mattress structure long-term. Foams are CertiPUR-US certified.

SETUP AND COMPATIBILITY: Delivered flat with white-glove in-home setup included. Compatible with adjustable bases, platform frames, and box springs. No tools needed.

NOT A FIT FOR: Sleepers who prefer a plush or pillow-top feel may find this too firm. Not recommended for combination sleepers who need deep contouring through the hips.

YOUR SLEEP, BACKED BY US

Every mattress at Mancini's Sleepworld comes with a 120-night comfort guarantee and the Rest Easy Promise, so you can buy with confidence. Add a premium mattress protector at the time of purchase and you can extend that to a full 365 nights. You also get the Best Price Guarantee, free next-day delivery, in-home professional setup, and flexible financing. Come try this mattress in person at any Mancini's Sleepworld showroom before you decide.

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Mancini's Sleepworld Diamond Luxury Firm Mattress 11.5\" Twin

The Mancini's Sleepworld Diamond Luxury Firm Mattress 11.5\" is an innerspring mattress built for back sleepers who need real spinal support without waking up feeling like they slept on a board. A heavyweight 4-way stretch knit cover wraps over a super soft quilt foam layer, letting the surface give just enough to take pressure off your hips and shoulders. Beneath that, 790 individually wrapped pocketed coils respond to your body independently, keeping the spine lifted all night. High-density medium firm comfort foam and a shock-absorbing base round out a build that is made to hold up, not just feel good on day one. Stop by any Mancini's Sleepworld location and a sleep specialist will put this right next to competing options so you can feel the difference yourself.

COMFORT AND FEEL: Luxury firm feel with gentle surface cushion and steady lumbar support underneath.

SIZE: This twin sized mattress is a natural fit for a solo sleeper, teen bedroom, or a compact guest room.

BEST SLEEP MATCH: Best for back sleepers and some side sleepers who want a luxury firm mattress for back pain relief. The quilted surface softens the firmness just enough so your hips don't bear the full load.

BEST FOR: Ideal for sleepers who need consistent lumbar support, want a coil mattress that limits motion transfer, or need a durable build that won't soften out early.

CONSTRUCTION SPECIFICATIONS: The stretch knit surface moves with you and cushions pressure points on contact. Super soft quilt foam sits directly beneath the cover for an immediate gentle feel. Eight inches of 790 pocketed coils respond individually, keeping your spine properly aligned. A high-density comfort foam layer and shock-absorbing base hold the mattress structure long-term. Foams are CertiPUR-US certified.

SETUP AND COMPATIBILITY: Delivered flat with white-glove in-home setup included. Compatible with adjustable bases, platform frames, and box springs. No tools needed.

NOT A FIT FOR: Sleepers who prefer a plush or pillow-top feel may find this too firm. Not recommended for combination sleepers who need deep contouring through the hips.

YOUR SLEEP, BACKED BY US

Every mattress at Mancini's Sleepworld comes with a 120-night comfort guarantee and the Rest Easy Promise, so you can buy with confidence. Add a premium mattress protector at the time of purchase and you can extend that to a full 365 nights. You also get the Best Price Guarantee, free next-day delivery, in-home professional setup, and flexible financing. Come try this mattress in person at any Mancini's Sleepworld showroom before you decide.

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Mancini's Sleepworld Diamond Luxury Firm Mattress 11.5"

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