I just received a leather motorcycle jacket that I bought online, and found that the zipper is installed European style, meaning when it's unzipped the zipper pull is on the left instead of the right.

Next time you zip up, or zip down, check out your zipper. There’s a good chance it’ll say YKK. But, what is YKK? I head to South Gate, California, to find out. At Koos Manufacturing in South Gate, ...