Mancini’s Sleepworld Onyx Medium Mattress 13″

Mancini’s Sleepworld Onyx Medium Mattress 13″ · Queen

The Mancini’s Sleepworld Onyx Medium Mattress 13″ is a hybrid mattress built for the sleeper who runs warm, needs consistent lumbar support, and wakes up stiff when a mattress goes soft on them. At 13 inches tall, it layers a cold-touch stretch knit cover over gel-infused memory foam and medium-soft comfort foam, giving you pressure relief that doesn’t trap body heat. The pocketed coil system underneath is fabric-wrapped, so it responds quietly to every position change without transferring movement across the bed. If you’ve been bouncing between mattresses that feel great in month one and disappointing by month twelve, the high-density support layers here are built to outlast that curve. Stop by any Mancini’s Sleepworld location and our sleep specialists will put this one beside every competing option so you can feel the difference for yourself.

COMFORT AND FEEL: Medium feel with gentle memory foam contouring and a coil system that keeps your hips from sinking.

SIZE: This queen sized mattress is ideal for couples or solo sleepers who want room to move without sacrificing bedroom space.

BEST SLEEP MATCH: Back and side sleepers will find this medium hybrid mattress for pressure point relief queen lands right where they need it, cushioning shoulders and hips while keeping the spine level through the night.

BEST FOR: Ideal for sleepers who run hot, need hip and shoulder pressure relief, or want coil responsiveness without sacrificing motion isolation.

CONSTRUCTION SPECIFICATIONS: The heavyweight cold-touch knit cover works at contact to manage surface temperature. Gel-infused memory foam in the quilt pulls heat away from the body. Medium-soft comfort foam cushions pressure points without letting you sink. Fabric-wrapped pocketed coils absorb motion independently. The high-density base foam keeps the mattress from softening out over time. Foams are CertiPUR-US certified.

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

NOT A FIT FOR: Sleepers who prefer a very plush, deep-sinking feel may find the medium firmness too supportive. Strict stomach sleepers who need a firmer surface should consider the Onyx Firm.

YOUR SLEEP, BACKED BY US

Every Mancini’s Sleepworld mattress purchase comes with a 120-night comfort guarantee and our Best Price Guarantee, so you know you’re getting a fair deal from day one. Add a premium mattress protector at the time of purchase and you can upgrade that to a full 365 nights. Come try this mattress in any of our stores before you buy. We also offer free next-day delivery, in-home professional setup, and flexible financing to make the whole thing easy.