Chime 12 Inch Hybrid Mattress with Adjustable BaseEnjoy endless possibilities for restful sleep with this hybrid king innerspring mattress and adjustable base set. Feel the support of a truly traditional coil mattress which contours to your body for a comforting feel. High density foam provides the firmness you love. Gel memory foam provides restorative support for your lower back. You can also sleep better than ever as you rise to new heights, and get a head and foot massage, with the adjustable