Locking cargo in luggage makes travel more convenient. If you leave your house unattended for more than 10 minutes, your keys could get lost or stolen. Lockable zippers help avoid this problem and make your carry-on bag secure when you're traveling by air or sea. The primary purpose of a backpack is transportation: You can take it on a plane, train, or car bus—Interior designers who design suites especially appreciate the practicality and beauty of backpack locks.
