Gravellaire 12" Queen Mattress in a Box, Gel Memory Foam and Pocket Spring Hybrid Mattress, Medium Comfort, Pressure Relief, Adult

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.