While checking out a plastic container in the shed I came across an army medic bag. It is about 18 inches square and probably at least 6 inches thick. It has several snap out pouches roughly the same size, some mesh some not. it also has mesh "Pouches sewn into the inside top, bottom and sides to store stuff.

This is it, but mine is woodland camo.
http://www.collectiblesanyday.com/jpg/301722183783_1.jpg