If you like to guarantee sitting comfort wherever you go this is genius our self inflating cushion rolls up into a tight tube that you can carry in your pocket or bagwhen required simply unroll it open its valve and it automatically inflates into a soft comfortable warm cushion more than enough to make a very welcome difference to the hardest coldest seat indoors or out to deflate roll it back up with the valve open so the air can escape then close the valve and pop it back into its