Ogio M2 Expandable 8-15L Tank BagThe M2 is an 8L tank bag with a 2. 5 expansion joint that allows the bag to expand and store up to 12L of volume. Made from single shot molded PU with Carbon Fiber graphics, this bag is water resistant, features a see through phone window, power cord port, internal removable storage pouch and shoulder strap. Extremely versatile, this bag is both a daily and travel workhorse. Features Single shot molded PU exterior is water resistant and will not