I had never seen one of these before today. They’re great. Way better than reaching for a single pole in a crowded car and wrapping your hand around some stranger’s fingers. And If you have the whole thing to yourself you can hook your arm through it.
Bonus: You should be able to put a hook around the bottom to hold your bag/umbrella. Someone measure the diameter of the pole so we can start making 3D printed hooks for this purpose!
Or yourself!