Bags Super 2 0 18L Mag Tnkbag Blk 1680 denier ballistic polyester and 1800 denier three-lined twill Jacquard construction Protective non-slip, non-scratch diamond pattern mounting base Expandable main compartment increases bag storage capacity Locking zipper pull on expansion zipper One-Way zipper on main compartment with a Zipper Garage for concealment