I purchased this extremely comfortable twin size memory foam mattress from KMART for $ 200 when I moved in the bay area and used it for only 4 months. Now, my family moved in with me and I got a king size bed, so I want to sell this one. It is in great condition (like brand new), very clean, no dirt, no stain, no pets, used in a non-smoking house.

http://www.kmart.com/memory-foam-6-in-thick-mattress/p-021B023386110001P?sLevel=0&redirectType=SKIP_LEVEL

I also have a twin size bed stand that I used with it. The bed stand is not in the best condition. You can have it for free.

Pick up at Mountain View or I can drop the mattress to Mountain View, Sunnyvale, Palo Alto, Stanford, Santa Clara etc. It is better to email me but you can also call me at 650 429 8491.