Bought this mattress for by 16 year old 6'1" 200lb 16 year old.  He had been complaining about back pain for months before I purchased this mattress.  He has been sleeping on his queen size mattress for about a month. I have not heard a single complaint about back pain since shortly after he started sleeping on it. He is waking up much more rested, as a matter of fact its hard to get him out of his bed now. It is medium firm.  The 14 inch thickness is great and looks terrific on his platform bed.