Cortech Super 2.0 12-Liter Strap Mounted Tank Bag 1680 denier ballistic polyester and 1800 denier three-lined twill Jacquard construction Protective non-slip, non-scratch diamond pattern mounting base One-way zipper on main compartment with a Zipper Garage for concealment Top flap internal organizer and soft lining Hideaway backpack straps Removable and replaceable snapped map pocket Two internal mesh storage pockets Hidden external pocket for miscellaneous storage Phoslite reflective piping Built-in sip tube and headphone exit ports Integrated stowaway rain cover with clear window included Two-tone red and black soft lining interior Also available in a magnetic mounted version