Self-Inflating Back Rest - Rectangle
Product Review (submitted on September 7, 2012):
The latest model has gotten even bulkier when deflated compared to the model it replaced. For a portable pillow, I would like to see a product with no self-inflating foam inside to minimize the storage volume. When completely deflated, the self-inflating function worked too slowly anyway. I have bought 5 of these over several years. I am getting more disappointed.
As another person mentioned, you need a big purse.