About the 14 L: Expansion from 14L to 17L RFID safe interior pocket Magnetic water bottle pockets Nine interior open mesh pockets Vertical luggage pass through strap Laptop Compartment: 15.5' x 10' x 1.5' Materials: Face coated nylon and polyester materials YKK + Zoom zippers Hypalon zipper pullers Foam padded back panel Nylon webbing Mesh pockets Polyester liner structural foam panels