And cathy, those signatures rug off VERY easILy. I know from experience.
I wore one once and I wasn't sweaty (never! ) or wearing anything scratchy or nUbby. And it was off in about half a day or less.
I had read (afterwards ) that someone suggested putiing a layer of plastic wrap behind the pin when you have it on to prevent the name from rubbing off. (It doesn't even seem to rub off; it just appears to melt away. )