These are the Original Modern Messenger Bags
The first Aerostich messenger bag was introduced in 1985. We patterned it (a 'Courier' model ) from a bag used by professional bicycle and motorcycle couriers at that time, and which was made of heavy canvas, had no hook-and-loop on it's flap, no reflective materials anywhere, no shoulder strap-length cam adjuster, no side-release flap buckles and no inside pockets. The Aerostich Courier bag was the very first one to incorporate these features and also was the first to incorporate modern materials like Cordura nylon, nylon webbing and Delrin buckles and adjusters. Every Aerostich messenger bag is handcrafted in the United States (one expert sews each bag entirely), and they remain the strongest, most comfortable, most versatile and most durable messenger bags available.
The 'letter' bag is the smallest, and is about the same as many purses. The 'Dispatch' is a bit larger, with enough room for lunch, a few books and file folders and a smaller notebook computer. The 'Courier' is the workhorse standard size, with enough room for lunch, books, any size notebook computer plus some alternate clothing (sweater, shoes, etc.). The 'Parcel' is pretty huge and will hold more than a grocery sack full of stuff. Anyone can wear it comfortably, but it looks and feels most correct for those who stand at least 5'7" tall.