Firm Feel: Ideal for stomach and back sleepers, or those who prefer an firm feel; All Serta mattresses are designed and assembled in the USA, leveraging our 90 years of manufacturing expertise Five Zone Response: Our 5 ZoneResponse Design provides full-body spinal alignment and targeted support for restorative sleep; It contours and cradles your pressure points while supporting the natural curves of your body Latex Foam: Designed with 4" of Serta's Graphite Infused True Response Latex Foam, made from 100% naturally-derived latex for a responsive feel and long-lasting comfort that is infused with graphite in order to help redistribute heat away from your body Cooling: Our CoolFeel Pro System combines a cool-to-the-touch fabric paired with the breathability of latex for a cool comfortable sleep Certified: All iComfortPro mattresses feature a 100 Night Trial, 10-Year Limited Warranty, and CertiPUR-US certified foams, certified free of harmful chemicals; Plus, all mattresses are compatible with adjustable bases and are not compressed in a box