Pairing an olive shirt jacket with black chinos is a wonderful option for a casually classic outfit. Balance your ensemble with a more casual kind of footwear, such as this pair of high top sneakers. And if we're talking casual fashion for 30-something guys, this getup looks good on almost anyone.
For an ensemble that's super easy but can be styled in a ton of different ways, reach for an olive shirt jacket and blue jeans. You could perhaps get a little creative with footwear and go for a pair of high top sneakers. Those who wonder how to dress well as you move into your 30s, you have your answer.