The Sling Backpack has a Main zippered compartment of 720 cu. in. of space, with internal zippered and mesh pockets.  16"H x 10"W x 4.5D"
The Middle zippered compartment of 350 cu. in. of space with three internal pockets.  15"H x 9.5"W x 2.5"D
The Front Top Compartment (49 cu. in) has a loop fastener patch on the outside for hook & loop name tapes and/or moral patches. 4"H x 7"W x 1.75"D
The Front Bottom Compartment (161 cu. in.) with some internal organizational pockets and a Snap-Hook keychain holder.  9.5H x 8.5"W x 2"W
MOLLE compatible webbing sewn onto the Bottom Front Compartment and the Sides of the backpack, to make the Sling Backpack a modular system.
The backpack also features a large discreet, padded, and lockable CCW Pistol Compartment on the back with a small padlock compatible Metal Zippers (padlock not included).
Other features include: adjustable padded single shoulder strap with quick connect buckle, adjustable side support strap with quick connect buckle, and a top heavy duty carrying handle.
Water Bottle Pouch included
Heavy Duty zippers with pulls
Durable PVC construction
VISM by NCSTAR