Jared Stoller wrote a review of Exped SynMat Sleeping Pad on July 13, 2012
I have had the synmat 7 for a couple of years now. I haven't had a night yet where I could feel anything under me but a cushion of air. If you have concerns about the durability of this mat, don't. It has held up to high country abuses for the last few years and is still going strong
the only feature of this mat that I am not thrilled about is the integrated pump. it takes a lot of work (around seventy pumps) to get the mat where I want it. It sure beats blowing it up though.