Backpack's are the best. The Allison has a drawstring for easy access, and a shoulder strap along with a removable and adjustable backpack straps. The backpack strap can also be used as a longer cross body strap. So many ways to wear it.
And the convenience continues with the front outside pocket, 2 inside slide pockets, and zipper pocket. But wait, there is one more! A zipper on the side for even more storage.