12" Nectar Classic Hybrid 5.1 Firm Mattress Meet the award-winning Nectar—the better mattress for better mornings. With multiple unique layers of sweet comfort and support, the Nectar Classic Hybrid 5.1 twin mattress ensures a refreshing rest. The breathable cooling cover, therapeutic memory foam, individually wrapped coils and support foams work together to keep you cool, cradle your body and minimize motion transfer. It's love at first sleep. Highlights: Comfort level: firm Cooling quilted poly-blend cover Therapeutic memory foam Comfort support foam and endurance support foam Individually wrapped coils with edge support Shift-resistant lower comfort cover Adjustable base compatible 365-night trial; Forever Warranty™ CertiPUR-US® certified foams Foundation/box spring sold separately Mattress ships in a box; please allow 72 hours for your mattress to fully expand after opening State recycling fee may apply Item Description: Twin Mattress 8" W x 75" D x 12" H Full Mattress 54" W x 75" D x 12" H Queen Mattress 60" W x 80" D x 12" H King Mattress 76" W x 80" D x 12" H