I've had my 257 for 5 years now. I've cheated on it with a few other bags, but at the end it was always there for me. It's an amazing bag. Looks only slightly more weathered now. Also, I'm always totally surprised by how roomy it gets when you ask it nicely. It basically seems to double in size when needed - like on those days when I have to stick an almost full 1.5" three-ring binder in a side pocket when the rest of the bag is already filled to capacity.
3/22/14 at 9:29pm