The S34 Secret Weapon has two main compartments, plus an outside pocket under the coffin-logo panel.
In the first "public" compartment, 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. The 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.