Concept of this bag starts from the need to accommodate A4 paper documents. Then, vertical orientation is comfortable to wear in cramped conditions – public transport, passageways etc.
Then, concealed carry. Or carrying various random and temporary items. Or putting some gear you currently work with. It is a space between two closed compartments.
On the sketch: A – front compartment, B – utility slot, C – rear compartment.
Asking about closure? Well, it required to open fast. May be a kind of spanish tab.
In the slot there is PALs and/or velcro to attach pouches and holster(s). Slogan – molle inside! ;D
Further details – inner pockets, shoulder strap. May be even some way to attach this bag as backpack with two straps. Shoulder straps attached to the one side of a slot, there holster is placed.
Important detail – no PALs on front and sides. Non-tactical colors.
What’s the whole idea?
Bag with CCW compartment, hidden between two another compartments, so weapon is not recognizable with grope search, i.e. palpation.
What’s the difference?
Inoffensive, herbivorous look. Access from top. Convenient area to put hat, gloves, goggles, tools, flashlight and so on.
Going deeply, better weight distribution because of weapon placement on the same panel as straps attached.