The jacket, named for Irving’s favorite cigar cut, screamed utility. It was trim and snug, as to avoid bunching when leaned over a fuel tank. It was hewn from heavy-duty steer or horsehide, ideal for protection and durability. Sleeve length was carefully considered. The pièce de résistance, an asymmetrical zipper, slid diagonally across the chest to allow variable ventilation, double-breasted for additional wind buffering. Next to the era’s formal overcoats, the Perfecto seemed bizarre. But enthusiasts knew what they were looking at, and the rest of the world caught on soon enough. Slouched over a scarlet Triumph in The Wild One, Marlon Brando catapulted young motorcyclists into the zeitgeist. Wearing a custom black Schott Perfecto, he also gave them a uniform.