This pairing of an olive shirt jacket and navy jeans makes for the ultimate off-duty style for any modern man. And if you want to instantly bump up your ensemble with shoes, why not complete this look with a pair of brown leather chelsea boots? It's a viable choice if you're crafting a well-coordinated outfit for weird transition weather. If you want to portray maturity and professionalism as a gent in his 20s, an ensemble like this is what you're looking for.