When it comes to rugged refinement, this pairing of a navy blazer and a cable sweater never disappoints. Finishing with black leather loafers is a surefire way to bring some extra flair to this ensemble. This getup is a viable choice when it comes to figuring out a well-coordinated look for transeasonal weather. As you're maturing from your 20s to your 30s, you want to start dressing like a grown-up. That's when combinations like this are a goofproof option.