This bag is a useful size with too-easy access . . . items can simply roll or fall out unless it is kept upright at all times!  This design flaw is not readily apparent in the promotional photos of the bag.  Sad to return it, but very happy with BOTH the similarly-sized Travelon Anti-Theft Travel Bag and the larger Travelon Anti-Theft Messenger Bag.  Both of these secure all storage compartments with zippers so items can't fall or roll-out provided the zippers are closed.