Frank II,
I have an old RS rolling suitcase. Still using it. Great bag. Anyway, the two sliders on the zipper have end loops. So, when the two sliders are pulled together - a luggage lock or cable wire loop/safety pin can be placed to hold the main compartment zipper shut. The smaller, outer pockets do not have this feature. However, any pocket that has two sliders could be joined together with a cable wire.
I looked up Zipper Anatomy. Pull-tab: finger grab that attaches to slider base. Slider: the flat base that moves along the track to open and close the track. Teeth: the interlocking “serrations” lining the track.
Stopper: tab at end of track to keep slider from falling off.