The Encore® Reserve Monaco Firm Mattress features a soft, gel-infused layer and an ultra-firm quilted foam layer that conforms to your body for lasting comfort and stability. The 8" fabric-encased coil system creates a strong foam border, allowing for personalized support even at the edge of your mattress. With a cool-to-the-touch performance stretch-knit cover, this collection offers cooling relief as you fall asleep. 10-Year Limited Manufacturer’s Warranty.