OH MY, OH MY... we've been sleeping on a waterbed for the last 7 years -which had resulted w/ me waking up w/ a sore back for the last 8mo. The foam mattress arrived.... it had a very slight odor (like another review mentioned) that was gone by bed time. The first night I woke up about 10 times... obviously not used to being SO comfortable when I'm sleeping... by the 3rd night... I finally slept thru the night!!! oh... there is nothing better than sleeping thru the night. heaven. Before I didn't want to get out of bed becuz work stinks, now I don't want to get out of bed becuz it's too darn comfortable. My friend spent $1100 on a reg mattress 5 yrs ago - which is very comfortable, but I think this foam mattress beats that one by .... a great night's sleep!