Providing a plush, supportive sleep environment with the latest in sleep technologies, the Therapedic Dover delivers quality sleep night after night. A layer of copper infused gel foam at the mattress surface uses the natural conductivity of copper to help pull excess heat away from the body for a cool, comfortable feel. Layers of Comfort Quilt Plush Foam and Performance Plush Foam work together to offer body conforming support that relieves pressure points for a deeper night's rest. The TheraWrap Encased Coil innerspring unit allows each coil to flex independently for precise support and reduced motion transfer between sleep partners. And thanks to the TheraFoam Encased Edge support system, the same level of support is extended to the mattress edges, providing a good night's rest no matter where you land. 10 Year Non-prorated Warranty.Due to a national foam shortage, densified fiber may be substituted for quilt and base foams.