Blame my son for this bag  

That's right!!!
2 continents in 2 years, travelling alone for extended periods....
He came home and wanted a leather bag to throw over his shoulder and take with him on his in city motorcycle and bicycle trips.  This leather bag needed to close securely but  without buckles.  He also wanted something with easy access to the necessary things in life... cell phone, keys, change and Starburst.   

SO... this is what we made and we named it after our son... the Advanced Adventurer.