This hybrid king mattress and king mattress foundation set is simply a better way to get a great night’s sleep. The hybrid mattress gives the contouring support of a traditional coil mattress and the firmness of gel memory foam that provides restorative support for your lower back. Hypoallergenic material is ideal for allergy sufferers for ultimate undisturbed sleep, not to mention peace of mind. The riser is an all-in-one support system that takes the place of an ordinary bed frame and box spring. And setup is as easy as 1-2-3. Step one: follow the riser’s quick and easy “no tools” assembly instructions. Step two: remove the mattress from the box and unroll. You’ll be amazed at how it fully expands within minutes. Step three: enjoy a great night’s sleep.