Will someone tell me what this is?

Question

(I apologize earliar for posting the wrong link)

what is the point of that little flap on the bottom of this chest protector? Most of the other ones I have seen dont have that. what is it for?

http://us.st12.yimg.com/us.st.yimg.com/I/hitrunscore_2014_106577324

Answer 1

It's so people won't see you wet your pants, when a foul ball hits you in the crotch.

Answer 2

Its to provides  little protection for a catchers most prized possessions

Answer 3

It protects the groin area lol