I think I have it. I don't know if it is an issue with other Barkerites but occassionally, no matter how carefully I tug them closed, the zippers on my case open just enough to cause some slideage. Never dangerous since it never has far to fall slung over my shoulder, but somewhat annoying.
Solution: A tiny bungee cord hooked to one zipper that clips onto the other, preventing the zippers from any unauthorized unzipping.
JKT
