Best Made's new leather briefcase is definitely one of the bags you put in the investment piece category. And it's mostly an investment of time. This is a bag that is designed to be thrown around and roughed up a bit. The 100% vegetable-tanned skirting leather is going to break down into a beautiful patina that can only be achieved with use and its heavy stitching is set with a shoe-cobbling machine for an extra layer of durability. It also features solid brass hardware throughout and 15L of storage to hold all your gear.