Roller meets all International carry on size requirements: Although passengers are rarely asked to put their roller into airline test "frames", you will travel with peace of mind knowing that this roller is designed to fitTSA combination lock to lock zipper: Although it is always recommended that you carry on your valuable photo equipment, this roller comes with a "TSA" combination lock that can be used to secure the main zipper, should you have to check gearFront Security Cable & Lock: Front security cable & combination lock allows you to lock a laptop to the front of your roller. This lock is very effective when you are traveling with a laptop case stored in the front stretch pocketBack Security Cable & Lock: Security cable & combination lock allows you to lock it 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 areaSecurity Plate: The Security plate may allow your lost or stolen bag to be returned! Before using your bag, register your unique serial number on the website at www.thinktankphoto.com/lostandfound