We have ordered four memory foam mattresses from Great Offer Stock over the past ten years and have been pleased. We prefer a very firm mattress and this time wanted to have a taller mattress. Most of the 14 inch mattresses we looked at were not firm enough based on density specs. We ordered the Firm version of this item based on specs and reviewers who said they thought it was actually too firm. Unfortunately, our experience has not been the same. The mattress is nice, but not even as Firm as the ten year old 10 inch memory foam mattress that we were replacing. We did allow the mattress to recover for 3 days before using. The mattress did expand to a full 14 inch height within 2 days of unwrapping. There was a slight residual odor but nothing too objectionable. The top of the mattress is quite soft by comparison to the mattresses we purchased for our other rooms. We live in the cold northeast, so this mattress is probably as Firm as it will get. A bit disappointing. Probably should have looked for something that was 5 pound density instead.