I am wearing a new zip up sweater today because I am a stylish fellow. But when I looked at the zipper earlier, I was stunned when I saw it wasn't a YKK zipper. In fact, this zipper has no letters on it at all!
Surely this inferior, unmarked zipper will fail at a crucial moment - like a wind gust - and I will be rendered cold. YKK zippers bind those teeth for life!