>Check any of your local motorcycle shops. That is a popular item with bikers that get a bit paunchy over the years but don't want to give up their favorite leather vest. I think they are call extenders but not sure.<

As one of the resident bikers, I'll chime in.

Yes, they're called extenders (or more commonly, "fat straps"). Used to hold your vest closed, over paunch and jacket (mine are only because of the jacket, thanks!)...