Meet the award-winning Nectar—the better mattress for better mornings. With multiple unique layers of sweet comfort and support, the Nectar Classic Memory Foam 5.1 king mattress ensures a refreshing rest. The breathable cooling cover, therapeutic memory foam and support foams work together to keep you cool, cradle your body and minimize motion transfer. It's love at first sleep. Comfort level: firm Cooling quilted poly-blend cover Therapeutic memory foam Comfort support foam Endurance support foam Shift-resistant lower comfort cover Adjustable base compatible 365-night trial; Forever Warranty™ CertiPUR-US® certified foams Note: Purchasing mattress and foundation from two different brands may void warranty; see warranty for details Foundation/box spring sold separately