The Airport Security is the largest ThinkTank rolling case, and is ideal for the photographer carrying lots of gear, big enough even for a 600/f4 lens. It has built-in security features - cables to lock the case to an immobile object, and a TSA-approved combination zip lock. It will hold a 17" laptop - in the front pocket (optional Artificial Intelligence 17 case gives added protection), or inside with the optional Low Divider Set. A tripod can be secured to the side, and a weatherproof cover is included. In addition, a compartment on the back holds a pair of emergency backpack straps if the going gets too rough for rolling!