The mattress is fairly comfortable, but has never completely recovered it's intended shape. I put it in my RV to replace an old innerspring mattress. There is a crevice in the center where it hasn't completely come back into shape and the corner is turned up about an inch.. It has been twelve days since I unfolded it and has been in use since that day. Time may cure the remaining problem. Turning it over when not in use when I return home may also cure this. I would rate the mattress 4 stars if it had recovered it's original shape. There was no unpleasant odor when unpacked.