Ugh. Seriously, this thing is not worth owning. Here’s the deal. The Ultimate Chalker clips on to your belt and has a chalk holder that connects to the clip with a magnet. Its fine as long as you never knock into or rub up against anyone or anything. When you’re in a crowded room, this thing gets knocked off all the time.
Better bet is to just get yourself a regular old pocket chalker. Its cheaper and you won’t be picking it up off the floor every five minutes.