I have an excellent SUPER comfortable Sealy Posturepedic Plush Innerspring KING mattress & box-spring (two twin) for sale. The box spring is 9"H and the mattress is about 9-10". Roughly 60x80. The mattress has been in a zipped tight premium mattress protector cover to protect it from dirt and debris and has only been out of the protector to wash it since I bought it in 2012. The box spring is in great condition, no tears or holes. The bed has only been used by one single person so not a lot of wear. It feels like a medium to firm mattress but everyone has their own preference as to support. It has great support. I purchased the mattress at Sleep Country in Redmond for $900 and still have my receipts. The box-spring is two twins so it's easy to move.I love this bed and sad that I have to sell it but I recently moved into a new apt and this bed takes up my whole bedroom and would love to have the extra room to move around. Unfortunately I have to downsize but excellent bed for someone that has the space. Does not make any noise and the mattress does not sag since I turn/flip it often. My home is smoke free and I take excellent care of my things so you are getting a super deal.