King Size Mattress 12 in Hybrid Memory Foam & Pocket Spring - Restful

In this review of the King Size Mattress 12 in hybrid model, the bottom line is simple: it suits sleepers who want a balanced, breathable bed with targeted support. The mattress combines CertiPUR-US memory foam, multi-layer sponge, and hundreds of independent pocket springs to deliver even weight distribution and reduced motion transfer, making it a good pick for couples and back sleepers who want steady support without an overly firm feel. Expect a medium-firm surface that takes 24-72 hours to fully expand and comes with a 100-night trial for peace of mind.

Key Features

• Hybrid construction: The combined memory foam and independent pocket spring system provides even weight distribution and targeted support from head to toe.
• Breathable design: High-density materials and the pocket spring array promote airflow to dissipate heat and moisture for a cooler sleep surface.
• CertiPUR-US memory foam: All foam layers meet CertiPUR-US standards so the mattress is free from certain harmful substances.
• Quiet, responsive springs: Individually wrapped coils reduce noise and absorb motion to limit partner disturbance during the night.
• Multi-layer comfort sponge: Layered sponges and a high-quality knitted top offer pressure relief aimed at alleviating back discomfort.
• Trial and support: The mattress arrives compressed in a box, expands in 24-72 hours, and includes a 100-night trial with customer support options.

Who It's For

The King Size Mattress is best for couples and individual sleepers who prefer a medium-firm feel that balances cushioning with support, and who value breathability to stay cool through the night. It also fits shoppers looking for CertiPUR-US certified foams and a hybrid coil system that addresses motion transfer.

Those who need an extremely firm surface or strong edge support for frequent sitting on the side rails may want to compare models with reinforced edges or firmer ratings, since some users report the feel is softer at the perimeter.

Pros & Cons

Pros

• Comfortable hybrid balance that supports spinal alignment while providing contouring from memory foam.
• Good airflow from the independent pocket springs and breathable foams to reduce trapped heat.
• Quiet performance and reduced motion transfer thanks to individually wrapped coils and slow rebound sponge.
• CertiPUR-US certified foams and a 100-night trial provide assurance on safety and fit.

Cons

• Some users report mixed experiences with firmness and edge support, so it may feel too soft for those wanting a very firm mattress.
• Requires 24-72 hours to fully expand after unpacking, delaying immediate use at full comfort.

Specifications

Size	King
Overall thickness	12 in
Construction	Memory foam, multi-layer sponge, independent pocket springs
Firmness	Medium-firm
Certification	CertiPUR-US certified foam
Delivery	Compressed in a box; expands in 24-72 hours
Trial	100-night trial

Our Verdict

The King Size Mattress 12 in hybrid is a solid value for sleepers seeking a breathable, supportive bed that blends memory foam contouring with responsive pocket springs. It works especially well for couples and back sleepers who want motion isolation and a medium-firm feel, and the CertiPUR-US foam plus 100-night trial make it a low-risk choice for most buyers.

Frequently Asked Questions

How long does it take to expand?
The mattress typically needs 24-72 hours to fully decompress and reach its intended shape and comfort.

Is the foam certified safe?
Yes, all memory foam in this mattress is CertiPUR-US certified and free from the restricted substances covered by that program.

Will it isolate motion for couples?
Yes, the combination of slow rebound sponge and independent pocket springs helps reduce motion transfer so partners are less likely to be disturbed.