The SeatCushion by Tempur-Pedic™
Product Review (submitted on July 5, 2012):
I bought this cushion for use on a vacation with 6 days of travel by car or plane of >7 hrs/day. I have serious discomfort in hips & pelvis with many hours of sitting. This maiden voyage using the pillow has been a Godsend! I was able to sleep on planes without pain waking me up. Able to stand up immediately withou having shooting pains. No hassles going through security with extra item.
I've also used this at home when working at the computer with the same good result. The price keeps me from buying a second one for work.
Love it! It made my vacation so much more enjoyable!