What is the Standard for GSD flews

by Agnes Scofield
(Massachusetts)

I have a striking GSD with deeper (longer?) flews than my former dog, and it gives his head a very handsome squared off look. I don't intend to show this dog, and I love the way he looks--people stop us on the street to find out where I got him.

He is eight months old, and may grow even more, but I am curious about the standard for flews in a GSD.