Sierra Sleep 10 Inch Chime Memory Foam M699M1 King Mattress and FoundationEnjoy endless possibilities for restful sleep with this king mattress and foundation. Soothing memory foam contours to your body, while a thick layer of firm support foam provides plentiful support and pressure relief of your bodys major pressure points. Plus, this mattress arrives in a box for quick and easy setup. Simply bring it to your room, remove the plastic wrap, and unroll.