A good leather portfolio is a timeless piece of everyday carry, and the Field Theories Leather Portfolio ($90-$175) is exactly what we’re talking about. Each portfolio is made from a single continuous piece of full-grain leather. The portfolio is cut, burnished, folded, stamped, riveted, and oiled – one at a time and entirely by hand. It comes in a variety of sizes to fit your carrying needs (they even make an LP-sized version for all of our vinyl-loving readers!).