A charcoal field jacket and khaki chinos are a wonderful combo to have in your day-to-day casual arsenal. Not sure how to finish your look? Rock dark brown suede loafers to dress it up. As a 30-something Millennial guy, you probably want to start dressing like a grown man. In this case, ensembles like this are a solid bet.
Pair a charcoal field jacket with beige chinos to feel infinitely confident and look stylish. For something more on the classy end to complement your outfit, complement your outfit with dark brown suede loafers. As a 30-something Millennial gent, you want to start dressing more like a mature gentleman. If that's the case, looks like this are perfect as inspiration.