Mattress itself is very fine -- the combination of vertical coils and memory foam is very comfortable (I like firm). No more aching back when I wake up in the morning! However -- I feel I'm lucky to have received it. It arrived with only a few threads of tape(literally) holding the box together, so box was wide open on all sides and allthe paperwork was missing of course. Good thing I didn't have to try to return it. Granted it's a large item -- all the more reason more care should be taken with the shipping!