I give this a 2 because the matress was plush and arrived on time. However, this matress claims to be on the certiPUR list for safe polyurethane foam and It isn't on the website. I would encourage anyone to look into it. The smell coming off this matress pad isn't the typical off-gassing, it is so pungeant I felt uncomfortable breathing it in.. which is what prompted me to do my research. I didn't want to deal with the process of returning considering packing this huge pad up once it expands seems like a pain. Not only did this issue occur, they sent me a 2" when I paid for a 3.5 "! I went and looked on the ceriPUR website and found linenspas matress pad and purchased. The linenspa arrived today and ironically the smell of the new matress went away within a few minutes.. my advice is do your research!