I was a bit skeptical upon reading previous reviews. However, when the mattress arrived I was beyong pleased! It is VERY heavy but I never planned to carry this around the house. Extremely comfortable, never sags cannot feel the futon bars through it like you would on a standard futon mattress. I've had it for over a year now and still have no problems with it. Someone metioned somthing about an odor it came with from the initial wrapping.....I never smelled anything of the sort. Love it.