Zipper Ties?

In a non-book related vein...ever heard of "zipper ties"?  I encountered them while shopping with the family this weekend and bought two!  Great idea!  They look like traditional ties that have already been knotted/tied, but with a twist.  They are created with a zipper built into the tail end.  You flip the zipper lock on the tail, then you can make the noose bigger or smaller without fear of it coming untied.  Then flip the zipper lock back into "locked" position and you're good to go!  My hubby says the inventor deserves to be a millionaire.