I have been using backpack purses for almost ten years, and this one is probably the best one I have had. My biggest problem with most backpack-purses is that they come two ways: too small, and too big. As a mom, I need more space in my purse than just a cute spot for a wallet, checkbook, cellphone, and keys. The larger versions of a purse-backpack so huge it could fit your laptop and two days worth of clothes. This bag is in the middle, and that's why this bag is so nice. It carries all the things the small pack does, and also my PDA, second checkbook, inhaler, pencils, receipts, small notebook, my son's wallet and Nintendo DS, and a number of other smallish things that always seem work their way into my purse.The front zippered compartment is great for receipts, club cards and prescriptions (both filled and script). It is easily accessable from the outside by just lifting the flap on top of the bag. But what I really like is the side back zippered compartment. It is a great place for keys. I can even just reach back and grab my keys without having to take the whole pack off.The inside compartments are well done, with a nice back zippered pouch for small things, and places for several pens, a cell phone, and a PDA (although if you have a small phone it may be a bit big). The leather was a nice quality - substantial without being heavy, and interior material seems heavy enough that it won't be tearing easily.I will be using this bag for a long time to come.