The Serta Perfect Dazzling Night Hybrid Mattress offers cool, supportive sleep. Our queen size Serta Perfect Sleeper mattress utilizes a smooth top and an 850-coil density system that delivers zoned comfort, cooling, and pressure relief. At the bottom of our mattress, we have our upgraded innerspring system that provides long-lasting support. This Serta Perfect Sleeper has a firm feel that is perfect for front and back sleepers. At the top of our 12" mattress, we have our cooling mattress cover. Beneath that is our cooling gel memory foam and gel foam, both working together to deliver even more cooling action. Finally, our support foam helps relieve pressure points. Shop now for your hybrid mattress. | Serta Perfect Sleeper Dazzling Night Hybrid Queen Mattress - Firm