Bike case zipper/tear

This is one of those things you don't know how to fix.  My client had a beautiful bike case that had ripped fabric near the zipper.  It was raveling like crazy and he did not know what to do.  It was really expensive and you hate to throw it away. So I looked it and figured out  way to fix it.

You can hardly even tell it was torn.

before

after unzipped

after zipped