5 ZoneActive™ Design Combines 5 zoned coils and contouring memory foam | Perfect Conform™ Memory Foam Premium, graphite-infused memory foam for pressure relief and heat redistribution | EverCool® Supreme Memory Foam A dynamic combination of cooling gel and premium memory foam | Cool Twist® Gel Memory Foam Cooling gel swirled into premium memory foam offers airflow, heat dissipation, and comfort | Firm and supportive; Great for stomach or back sleepers | Designed and Built in USA | Adjustable Base Compatible | 10 Year Warranty | Your new mattress may initially feel firmer than expected. Please allow up to 60 days to acclimate to your new mattress as it naturally adjusts to contour, comfort, and support you best | Premium memory foam is temperature-sensitive; it may feel firmer in cooler temperatures and softer in warmer ones. For your preferred comfort, please allow several hours for your memory foam mattress to adjust to the room’s temperature