Offering restorative support with a firm feel, the Posturepedic Premier Hybrid Cobalt features an innovative hybrid design with half gel memory foam and half pocketed coils. Featuring a zoned Sealy Embrace Premier coil system, this firm mattress's specially engineered encased coils respond to the natural curve of your spine while reducing motion transfer for full body support. Above the coil system, layers of gel memory foam infused with innovative cooling material help to keep your body at its ideal sleep temperature while conforming to your body's individual shape for superior firm comfort. The premium CoreSupport Premier Center places reinforced gel memory foam and 20 percent more coils at the center third of the mattress, where you need it most. The SolidEdge HD Premier System reinforces the mattress border, creating a larger usable sleep surface, while a stretchy knit breathable fabric cover encourages airflow throughout the mattress layers. 10 Year Non-Prorated Warranty.