—01. 100% nylon shell.
First of all, I'm sure we know this is absolute overkill for your average city dweller, but that's kind of why it's amazing. Mountain Research does an incredible job of creating items plucked from the perfect idealized camping trip and this backpack is no exception; weatherproof and made from nylon, with a leather bottom and shoulder straps. While well out of reach for most of us and not even generally practical, it certainly is a wonder to behold.