At first it was not easy for my fingers to hold and screw/unscrew the small connectors for the cable, but I did get the hang of it with practice. But like all luggage zipper-lock tags, they have to be small to slip through the tiny zipper holes. These are made with aluminum and do not bend, which is good. Because they're made of metal, these will make a 'klinking' sound as they are jostled with your luggage, which I'd don't like. The thin metal cable and the metal frame is strong.