Travel Sentry Approved lock allows your luggage to be unlocked, inspected and protected safely The special TSA ID mark alerts that they can inspect your luggage safely This special code is used exclusively by the TSA to unlock and relock your luggage 3 Digit combination allow you to set your unique number Travel Sentry Approved locks from Sportube are accepted and recognized by the US government. Luggage is safely unlocked, inspected and re-locked