Saved my vacation!
Less than a week before a 2-week trip to China that involved a 16-hour non-stop flight, my sciatica flared up.  I was seriously considering cancelling the trip.  Then a friend suggested this cushion, and I decided to give it a try.  Delivery was prompt.  I have to say, this cushion saved my trip.  It, along with a timely visit to the chiropractor made it possible to survive &amp; tolerate the flights to &amp; from China as well as several internal flights.  It's heavy as heck, awkward to carry, and the covering (dark blue/almost black) blends in with carseats and makes it easy to forget to pick it up &amp; take it with you.  (I got it back!)  But you just can't beat it for functionality.
Rating: 5 stars