Love a plush pillowy feel but need a bit more support Look no further than this plush king mattress. Five different levels of high-density foamincluding plush pressure-relieving foam and gel memory foam for temperature regulationwork in concert to provide the ideal balance of comfort and support. Rest assured a power packed wrapped steel unit offer reinforced structural support where you need it most while 13-gauge wrapped coils provide edge support for a larger sleep surface and supportive sitting surface. Foundationbox spring available sold separately.