The smaller S25 Cherry Bomb, shown above, 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, as shown above), 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 7" barreled M4 or similar proportioned weapon (Primary Weapons Systems Diablo shown above). The pack measures 24.5" x 11", 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.