works really great. I have it strapped to the middle back of my chair, right in the groove where the ergonomic back caves in and gives me horrible upper back pain. I use this to fill in the gap provie support there making the back more flat. Totally made my chair usable and i couldn't use the chair without it. I got another one I put under my lower back as needed.<br /><br />Only problem is, only lasted a few months before becoming flat as a pancake. thinking I should of got the firmer roll and just broke it in.
Rating: [4 of 5 Stars!]