Think Tank Airport Ultralight V 2.5, Backpack with Security Cable, Lock and Shoulder Harness. Security Cable and Lock Security cable & combination lock allows you to lock the laptop case or to immovable objects. This security cable is very effective when you have to leave your gear for a period of time in a media room, wedding hall, hotel room, or other open area. Holds Multiple SLRs and Lenses For most photographers this backpack will hold a complete kit with one or two SLRs and multiple lenses and accessories. It is 6.5" deep, so it will hold pro-size SLRs and large lenses with hoods. Holds up to a 500mm f/4 Lens When a large lens like a 400 2.8 or 500 4 is put into this backpack, space is limited. This is an example of a sports photography kit, with a 400 2.8, 70-200 2.8, a wide angle, one SLR, and a 1.4 teleconverter. Inner Clear Zippered Pockets The inside lid has two zippered pockets with little ports that the zipper sliders go into to protect your gear from the sliders. These pockets can be used for all of your miscellaneous items such as pens, pencils, energy bars, credentials, notebooks, and more. Fits in the Overhead Bins of Small Planes Similar to our Airport Antidote, this backpack will fit in the overhead bins of small planes or under the seat in front of you. The opening of the overhead compartment on most small planes is approximately 7", although typically they drop down on the inside and become deeper, approximately 8"