Military outerwear is having a serious moment right now, from bombers to parkas, but the one style we are bound to see a lot more of is the souvenir jacket. The vintage-inspired satin pieces date back to WWII when Americans who were stationed in Japan commissioned them as keepsakes. The ornate outerwear fuses both Eastern and Western styles to create some badass designs. Now brands from Saint Laurent to Stüssy are injecting new life into the jacket, and guys are taking note.