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Extra Firm
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On Sale
Overview
- SleepMatch: red
Sleepworld Express 11" Innerspring Extra Firm Mattress
- Built for serious spinal support without softening over time
- Fabric-wrapped coil system made with super heavy-gauge wire
- Upholstery-grade high-density foam keeps the surface stable for years
- Motion separation so one restless side stays on one side
- CertiPUR-US certified foams, safe for everyday home use
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In Stock
Overview
Sleepworld Express 11" Innerspring Extra Firm Mattress · Twin XL
The Sleepworld Express 11" Innerspring Extra Firm Mattress is an innerspring mattress built for back sleepers and stomach sleepers who need a non-negotiable extra firm mattress for back pain relief. The coil system uses super heavy-gauge wire wrapped in fabric, so the support holds its shape rather than compressing under sustained weight. A heavyweight 4-way stretch knit quilt panel covers firm support foam layers, keeping the surface flat and responsive from edge to edge.
Underneath all of that, super high-density upholstery-grade foam layers anchor the structure so this mattress stays true to its original feel long after the first year. If you want to feel it next to competing options before you decide, stop by any Mancini's Sleepworld location and our sleep specialists will put it side by side with everything in this firmness range.
COMFORT AND FEEL: Extra firm and flat with a responsive coil lift and no give at the surface.
SIZE: This Twin XL sized mattress is a smart fit for taller teens, college dorm rooms, or solo sleepers who need full-length support without extra width.
BEST SLEEP MATCH: Stomach and back sleepers who need a firm mattress for back sleepers will find this coil structure keeps the hips level and the spine neutral through the night.
BEST FOR: Ideal for sleepers who need maximum spinal alignment, want to stop sinking into their mattress, or require a durable firm surface that holds up over time.
CONSTRUCTION SPECIFICATIONS: The fabric-wrapped coil system uses super heavy-gauge wire to deliver a firm, lifted feel with natural airflow through the core. Firm support foam layers in the quilt panel add a flat, settled surface without any plush buffer. Super high-density upholstery-grade foam at the base resists compression so the mattress holds its shape year after year. Foams are CertiPUR-US certified.
SETUP AND COMPATIBILITY: This bed-in-a-box arrives rolled and compressed, expands within hours, and requires no tools. Compatible with adjustable bases, platform frames, and box springs.
NOT A FIT FOR: Side sleepers who need hip and shoulder cushioning, or anyone who prefers even a moderate amount of surface give.
YOUR SLEEP, BACKED BY US
Every mattress purchase at Mancini's Sleepworld comes with a 120-night comfort guarantee and the Rest Easy Promise, which includes a Best Price Guarantee, free next-day delivery, in-home professional setup, and flexible financing. Want a full year to be certain? Add a premium mattress protector at the time of purchase and your guarantee extends to 365 nights. Come try this one in any of our stores before you buy.
Features
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Suitable For Adjustable Base
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Motion Separation
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Edge Support
- SleepMatch: red
Sleepworld Express 11" Innerspring Extra Firm Mattress
Features
- SKU: BRK-B400-3XM-XF-25
- MPN: 25WICOTEF33XL
- GTIN: 810146416128
- Brand: Sleepworld
- Collection: Express
- Type: Innerspring
- Mattress In A Box: Yes
- Firmness: Extra Firm
- Height: 11
- Length: 80
- Width: 39
- Shipping Height: 42
- Shipping Width: 15
- Shipping Length: 15
- Warranty: 10 Year
- Cover Material: Polyester Knit
- Quilting Layers: 1.5'' Super Soft Quilt Foam
- Comfort Layers: 1.5'' Extra Firm Support H.D. Foam
- Support System: 8'' 790 Pocketed coil, 3/4'' Shock Absorbing H.D. Base Foam
Specification
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Suitable For Adjustable Base: Yes
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Motion Separation: Yes
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Edge Support: Yes