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Medium
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On Sale
Overview
- SleepMatch: blue
Mancini's Sleepworld Onyx Medium Mattress 13"
- Cooling gel memory foam keeps you sleeping at ease
- Pocketed coil support system reduces motion transfer
- High-density comfort layers cushion pressure points
- Stretch knit cover draws heat away from the body
- CertiPUR-US certified foams safe for your home
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In Stock
Overview
Mancini's Sleepworld Onyx Medium Mattress 13" · Twin
⭐⭐⭐⭐ 4.2 · 100+ verified sleepers
The Mancini's Sleepworld Onyx Medium Mattress 13" is an innerspring mattress built for the sleeper who runs warm and wakes up stiff. At 13 inches tall, it layers cooling foam comfort over a fabric-wrapped pocketed coil system that moves with your body rather than pushing back against it. The Onyx Medium hits a reliable middle ground: enough give to take pressure off hips and shoulders, enough push-back to keep your spine where it belongs through the night. Stop in to any Mancini's Sleepworld location and our sleep specialists will put this next to every competing option so you can feel the difference for yourself.
COMFORT AND FEEL: Medium feel with a cushioned surface and coil-driven support that keeps the spine lifted.
SIZE: This twin sized mattress is ideal for a solo sleeper, a growing child, or a guest room that needs to work harder.
BEST SLEEP MATCH: Best suited for back and side sleepers. The medium feel lets shoulders sink just enough while the pocketed coils hold the lumbar in place so you stop waking up stiff.
BEST FOR: Ideal for sleepers who tend to overheat, wake up with pressure point soreness, or need a dependable innerspring that holds its shape over time.
CONSTRUCTION SPECIFICATIONS: The stretch knit cover is designed to feel cool on contact and give a little without trapping warmth. Below it, a gel-infused foam layer pulls heat away from the body as you settle in. Two comfort foam layers absorb pressure before you reach the coils. An 840-count pocketed coil system responds to movement without transferring it across the bed. A shock-absorbing base foam anchors everything so the mattress holds its shape.
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 the Onyx Medium too firm for their preference. Not ideal for those seeking a deep pressure-cradling sensation.
YOUR SLEEP, BACKED BY US
Every mattress at Mancini's Sleepworld comes backed by a 120-night comfort guarantee and our Rest Easy Promise, so you can buy with confidence. Add a premium mattress protector at checkout and you choose to extend that coverage to a full 365 nights. We also offer a Best Price Guarantee, free next-day delivery, in-home professional setup, and flexible financing. Come try the Onyx Medium in store before you decide.
Features
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Suitable For Adjustable Base
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Motion Separation
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Cooling Technology
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Edge Support
- SleepMatch: blue
Mancini's Sleepworld Onyx Medium Mattress 13"
Features
- SKU: BRK-ONY-3M-MED-25
- MPN: 25WICRAFM_FP33
- GTIN: 810146419242
- Brand: Mancini's
- Collection: Sleepworld
- Type: Innerspring
- Mattress In A Box: No
- Firmness: Medium
- Height: 13
- Length: 75
- Width: 3
- Shipping Height: 13
- Shipping Width: 75
- Shipping Length: 38
- Warranty: 10 Year
- Cover Material: Polyester Knit
- Quilting Layers: 2 H.D. Super Soft Quilt Foam,3/4 H.D Gel Infused M - Foam
- Comfort Layers: 1'' Med-Firm H.D. Foam + 1.5'' Extra Firm H.D. Support Foam
- Support System: 8'' 840 Pocketed coil,1.0'' 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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Cooling Technology: Yes
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Edge Support: Yes