I was trying to decide between this mattress and some of the other mattresses sold on Overstock. Saw a number of negative reviews on some of them, and was hesitant to order this mattress because there were no reviews posted. After finding some reviews on other sites (which had the mattress for ** higher if not more, I proceeded with the order from Overstock. The mattress comes very well packaged, the cardboard box has a cardboard sleeve on the inside which holds the outer plastic sleeve with the bag containing the mattress. The mattress itself is in a vacuum bag and is fairly heavy. As with all other memory foam mattresses, on this one the same advise goes: Place the vacuum packed mattress on the bed / box spring prior to opening, it's a lot easier to get it in place (especially if you're setting it up by yourself). The mattress took only ~1 hour to expand to it's size, and I didn't notice any odors coming from the mattress. I am using a platform bed with slats as base for the mattress. Overall it is very comfortable, but more firm than I expected (I only had foam toppers on a standard mattress before). However it contours nicely after laying on it, and I sleep better than I did on my traditional mattress with topper.