TravelLite™ Seat Cushion by Lifeform®
Product Review (submitted on March 29, 2011):
I bought a new car and after a while the seat started to mess up my back. I bought this cushion thinking it would help in my car but it didn't and I sold the car.
In my office chair this cushion is fabulous. I have a Herman Miller Areon chair and the bottom was starting to sag a little. Adding this cushion to this chair is perfect. Yes, it is expensive but I've never used anything that works this well.
The only negative I can think of is it's really hard when it's cold. Around 40 degrees it becomes rock hard! Not really a big deal.