The 5729 Zuma 9 Secure Traveler Backpack from Tamrac is a uniquely designed pack since it provides total security while wearing it. With its sole access rear opening door that always rests against your back, there's no chance that anyone will ever be able to reach inside to take anything. The Zuma 9 is divided in half with the lower compartment rated to hold your DSLR with a 6" lens attached plus an extra lens and a flash. The upper area is reserved for personal items such as a guidebook or lunch. You can even pack along your iPad that will be kept in its own separate padded compartment for safety. The 'wow' factor of this pack is its rear door access. In order to retrieve the contents, tighten the waist belt, slide one shoulder strap off and swing the pack to the front and remove the other shoulder strap. Unzip the door, remove your camera and shoot. Notice that you never have to set the pack down to access your gear.