Gravellaire 14" King Mattress in a Box, Gel Memory Foam and Pocket Spring Hybrid Mattress, Medium Comfort, Pressure Relief, Adult

This hybrid mattress is engineered to provide consistent, healthy sleep for a wide range of body types and sleep styles. Its carefully designed multi-layer construction balances pressure relief, spinal support, and breathability to promote all-night comfort. Certified by OEKO-TEX STANDARD 100 and CertiPUR-US, all foam components are tested against over 1,000 harmful substances for a safer sleep environment. High-density gel memory foam contours to the body while resisting sagging, helping relieve pressure on the shoulders, back, and hips. Individually wrapped pocket coils deliver responsive, targeted support and reduce motion transfer for undisturbed rest. Breathable comfort layers and a skin-friendly knit cover enhance airflow and heat dissipation, supporting a cooler sleep experience. Reinforced edges improve stability and usable sleep space, while the non-slip base keeps the mattress securely in place. Built with durable core materials for long-term performance, this mattress is backed by an extended sleep trial and long-term warranty, offering a risk-free way to invest in lasting comfort and support.

• Hybrid Support System – Combines pressure-relieving gel memory foam with individually wrapped pocket coils for balanced comfort and support.
• Motion Isolation – Pocket coils reduce motion transfer, helping minimize sleep disturbance from movement.
• Pressure Relief & Spinal Alignment – Multi-layer foam design supports proper posture and helps relieve pressure on key areas.
• Cooling & Breathable Design – Gel-infused foam and breathable knit fabric promote airflow and heat dissipation.
• Durable, Sag-Resistant Materials – High-density foams and reinforced core help maintain long-term performance.
• Reinforced Edge Support – Enhanced edges provide added stability and more usable sleep surface.
• Non-Slip Base – Bottom layer helps keep the mattress securely in place on most bed frames.
• Certified Safe Materials – OEKO-TEX STANDARD 100 and CertiPUR-US certified.
• Fire Safety Compliant – Includes a built-in fire-resistant layer meeting 16 CFR Part 1633 flammability standards.
• Convenient Mattress-in-a-Box Delivery – Compressed and shipped for easy setup; allow time after unboxing for full expansion.
• Risk-Free Purchase – Includes an extended sleep trial and long-term warranty for added peace of mind.