Absolutely the mattress I was looking for. Some reviewers stated that it was firmer that they expected; that's why I chose it over the 14 and 8 inch memory foam mattresses offered. There is no sag or sponginess after a month and I am a 200 pounder. There was no odor problem and it was fully expanded in 12 hours. There are no helpful handles so open it where you plan to use it; when open it is a challenge on the stairs.