Me and one guy starting making those. Curently for paintball use but it is not limited to that. Made in Quebec Canada with good material and quality sewing.

Can be usefull at Convention I guess: Storing the events time list, storing a map, storing card that you get gived, putting your conbadge inside.

You can put a Pen inside.

Anyways price is 23$ea + Shipping for Black/Od green(like pictured)/tan
Or Cadpat but it is 25$ + Shipping

Size
Outside when closed:
7'' x 4.5''(a little bigger than 4.5)

Inside windows:
5'' x 3''