- Hint, it is not what you thinking.
I love the lockable zipper pulls. This is a great feature for traveling. In all my travels it is not uncommon for us to end put being put on full flights. These flights often required you to leave you back pack on the jetway. The reasons we hear the most is because of no more overhead bin space.
While leaving your carryon on in such a vulnerable position fear not. Just put a TSA approved lock on you zippers and you can worry less.