This is the first ever mattress I bought. The other apartments I stayed on came furnished and had not bought anything yet. Nice 'n' Soft.....however too soft ! I have it on a platform Queen bed with the inner space height of about 4.5" and even this matteress is said to be 8", only about an inch and half is above the bed side rails ! I have been playing my PS3 sitting at one edge of the bed, a temporary arrangement and just in a week, that side is already sunken !I would suggest people to go for a little extra buck and buy a little hard mattress than this one except for those who want softness for a few months and then a 4" reduction afterwards !