NcStar Sling Backpack, Black Features The Sling Backpack has a Main zippered compartment of 720 cubic inches of space, with internal zippered and mesh pockets The Middle zippered compartment of 350 cubic inches of space with three internal pockets The Front Top Compartment 49 cubic inches has a loop fastener patch on the outside for hook loop name tapes and/or moral patches The Front Bottom Compartment 161 cubic inches. with some internal organizational pockets and a Snap-Hook keychain holder 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 dut NcStar Small Backpack/Mono Strap Vism Small Back Pack/Mono Strap/Black