Full Size Mattress 12 in Full Mattress in a Box - Hybrid Support

In this review of the Full Size Mattress, the bottom line is simple: this mattress is best for sleepers who want a middle-ground feel with pressure relief and stable support. The combination of memory foam layers and an independent pocket spring system gives targeted support from head to toe while reducing motion transfer, so couples and people with back sensitivity will appreciate the blend. Netply's CertiPUR-US certified foam and breathable construction also make it a good choice for those who tend to sleep warm but still want the contouring feel of foam.

Key Features

• Hybrid construction: Memory foam and multi-layer sponge combined with an independent pocket spring system deliver balanced cushioning and resilient support for most sleep positions.
• Even weight distribution: The layered foams and pocket springs work together to distribute weight from head to toe, helping to relieve pressure on shoulders and hips.
• Breathable materials: High-density foams and a ventilated spring core promote air flow to dissipate heat and moisture, keeping the sleep surface cooler.
• Quiet, isolated motion: Hundreds of independent pocket springs and slow rebound foam absorb noise and minimize partner disturbance.
• Certified safety: All memory foam meets CertiPUR-US standards, ensuring reduced exposure to harmful chemicals.
• Trial and expansion: The mattress ships compressed and typically fully expands within 24-72 hours and includes a 100-night trial window.

Who It's For

The mattress is a solid option for side and combination sleepers who want pressure relief from memory foam without the sinking, overly soft feel - the pocket spring layer maintains support under the hips and torso. Couples who are disturbed by movement will benefit from the independent springs and slow rebound foam that reduce motion transfer.

People who need a very firm, orthopedic-level surface or a luxury pillow-top feel should look elsewhere; likewise, those wanting an ultra-plush deep-conforming foam experience may prefer a softer, all-foam model. Expect a brief break-in period as the mattress finishes expanding and the foams settle.

Pros & Cons

Pros

• Balanced hybrid feel combines contouring memory foam with responsive pocket springs for support across the body.
• Breathable construction and independent springs help dissipate heat for a cooler sleep surface.
• CertiPUR-US certified foams offer peace of mind about material safety and indoor air quality.

Cons

• Full expansion can take 24-72 hours, so immediate full comfort may require waiting a day or two.
• Not designed as an exceptionally firm or luxury pillow-top mattress, so those niche preferences may not be met.

Specifications

Size	Full
Thickness	12 in
Construction	Hybrid memory foam and independent pocket springs
Foam Certification	CertiPUR-US certified memory foam
Cover / Surface	High-quality knitted fabric with multi-layer sponge
Trial	100-night trial
Expansion time	Allow 24-72 hours to fully expand

Our Verdict

The Full Size 12 in hybrid mattress is a practical choice for sleepers seeking a mid-firm, supportive surface with pressure relief and improved motion isolation. With CertiPUR-US foams, breathable design, and an independent spring core, it offers good value for couples and those with occasional back discomfort who want a cooler, balanced feel without splurging on luxury layers.

Frequently Asked Questions

How long does the mattress take to expand?
Most expansion occurs within the first few hours, but allow 24-72 hours for full expansion and off-gassing to subside.

Is the foam safe?
Yes, the memory foam used is CertiPUR-US certified, indicating it meets standards for content, emissions and durability.

Will it sleep hot?
The combination of breathable foams and an independent pocket spring core helps dissipate heat and generally provides a cooler sleep surface than dense, all-foam mattresses.