This French bag is something I really want to try. I've gone out fast trekking for longer periods of time with little more than an REI Flash Pack (~300 grams) and been, for the most part, happy. But that's not to say that I couldn't be a whole lot happier.
For a measly 200 grams I could have more storage, better balance, and constant access to things like food and water.
Next up, figuring out how to import this beauty.