This bag is the multi-functional 1 of 2 larger siblings of the FTB clan. It has the same, knife sharp styling and organizing features as the smaller bags but with more capacity and some extra features. A top mounted auxiliary storage bag is included with gull-wing style access flaps to expand your cargo capacity by a huge margin. Need to get at rain gear fast, but keep it away from your other stuff? These auxiliary storage bags fit the bill, and more.