Basically good product, but
This is a good product and performs as advetised.  I would have liked it to be a little wider across my lower back.  Also note:  it provides considerable support even when the bladder is totally empty of air.  If you want to remove all support, you have to take it out.  Otherwise very comfortable, also makes a nice neck pillow when you want to tilt you seat back and take a nap.
Rating: 4 stars