Love it!
I bought two of these because I was having issues with my lower back. One for my car and one for the office.  So far, it has made a world of difference for my back in just a few days.  Very comfortable.  The only thing I would like different is the vertical straps had Velcro so that I could use them on the chair/car seat.  I have to readjust the position when I sit down .  Despite that issue, I still gave it 5 stars. My co-work saw me bring one in the office and tested it out. She is planning to buy one as well.
Rating: 5 stars