This bag has lots of compartments on the front, inside and back.  It also has a zippered pocket on each side for a water bottle. It has a key fob and a pass-through for earphone wires. The handle on top of the bag is a nice feature when you don't want to wear it. The pockets are very deep, in fact, my wallet sits at the very bottom of the inside pocket and feel quite lonely in there as I can add more stuff if needed.  I have a notepad, pens in the secondary inside pocket with plenty of room for a tablet,  and some personal items in the smaller zippered pocket on the inside. The lower outside pocket on the front holds my smartphone without an issue. The shoulder strap is well cushioned for comfort, however, if you are a short person like me, at 5 foot tall, the strap does not tighten up enough to make it sit comfortably on your back.  This is disappointing as this bag is a very good organizer bag, with deep pockets to hold lots of stuff.  I'd give it a five star, but it really is only for taller people.  Since I opened it and used it, I'll keep it until I can find another like it a bit smaller, with a better adjustable strap.