I got a 10" expecting it to be less than 10". I've seen enough mattress-in-a-box reviews to know that expectations don't always match reality. It wound up being around 7" in total so be mindful of this.  Pretty firm on the first night (I'm writing this review as I rest on it now). A little more firm than I expected. I bet it would be heavenly with a mattress topper. Decompressed evenly. I let it decompress for 24 hours before moving it at all. It'll do for now and I'll get a topper eventually. :) I would give it a much higher rating if it weren't for 10" being 7". Fair warning for anyone buying a mattress-in-a-box. Buy thicker in size.