For you Moleskine users out there, this is a nice addition.  It has six of the same pockets that are at the back of a standard Moleskine notebook.  I don't carry mine all the time.  But I do any time I travel.  It's a good place to store all of my receipts and anything else I collect while out.  I can even organize them a little...different pockets for business cards, receipts, etc.