This combo of a charcoal shawl cardigan and navy jeans is indisputable proof that a safe casual getup doesn't have to be boring. Dial up this whole ensemble by wearing a pair of tan suede derby shoes. So if you're on a mission for a look that's on-trend but also entirely spring-friendly, this is it. As a 30-something gent, you probably want to start dressing like an adult. If that's the case, combinations like this are ideal as inspo.