The firm Cobalt Calm 12’’ mattress offers a supreme restorative sleep experience with its innerspring design. Enjoy cool, contouring comfort with the Cool Twist® Gel Memory Foam, which enhances airflow and heat dissipation. The PillowSoft® Aire foam layer promotes airflow through its unique, gently rippling design, keeping you comfy all night long. Cushion Quilt™️ foam and two support foam layers add extra softness to your sleep. Experience even more targeted lower back and hip support with the three-zoned 850-coil density system. This mattress is topped with an anti-bacterial, cool-to-the-touch cover made with CoolFeel™️ fabric, helping stomach and back sleepers achieve perfect sleep. Being CertiPUR-US® Certified, rest assured knowing our foam materials are free from harmful chemicals and gasses.