Chime 12 Inch Hybrid 12 Inch Hybrid Mattress with FoundationEnjoy endless possibilities for restful sleep with this hybrid innerspring mattress and foundation 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. The mattress riser is an all in one support system that takes the place of an ordinary bed frame and box spring. Included brackets