The Eberlestock S34 Secret Weapon Pack has two main compartments, plus an outside pocket under the coffin-logo panel. In the first “public” compartment of the Eberlestock Secret Weapon Backpack, you’ll find translucent slip-pockets suitable for iphones, with a double pen slot between them, a semi-rigid document / laptop sleeve (which alternates as a hydration bladder stowage pocket), opposing rows of MOLLE/PALS type webbing, and a mesh pocket inside the front door. In the second, “private” compartment, you’ll find another sleeve suitable for a laptop, plus the main weapon stowage compartment. This is sized for a 22″ barreled short action (20″ shown above), or a 20″ long action sniper rifle mounted to our M1 Stealth Chassis, or for an 11″ barreled M4. The Eberlestock Secret Weapon Tactical Pack measures 30″ x 13″, and this pocket uses the full dimensions. Also here, you’ll find a nice organizer assembly, with two padded magazine/iphone/compact camera compartments, pen sleeves, a zippered pocket, a tuck-pocket, and a key-keeper hook. The pack includes a rain cover stowed in a pocket in the bottom. The Eberlestock Secret Weapon Back Pack features a removable waistbelt that has two zippered pockets, making this pack the one you need.