For an outfit that's pared-down but can be modified in a myriad of different ways, make a grey blazer and navy jeans your outfit choice. To introduce some extra flair to your ensemble, complement your ensemble with a pair of black leather oxford shoes. This combination shows how gents over 30 kill in the fashion department.
When the situation permits casual style, you can rely on a grey blazer and navy jeans. Infuse this getup with an air of class by finishing with a pair of dark brown leather brogues. As you move into your 30s, you probably want to start dressing like an adult. In this case, getups like this are perfect as inspo.
No matter where the day takes you, you can rely on this casual pairing of a grey blazer and navy jeans. When it comes to shoes, go for something on the classier end of the spectrum and finish off this look with a pair of navy leather loafers. Ideal to show people that you're mature and confident enough to make your own sartorial choices.
This pairing of a grey blazer and navy jeans looks sharp, but it's very easy to wear. To add some extra zing to this look, introduce a pair of brown leather oxford shoes to the mix. When it comes to outfit ideas for maturing gents, this look looks cool on most men.
Marry a grey blazer with navy jeans for a straightforward outfit that's also pulled together. As a 30-something Millennial man, you probably want to start dressing more professionally. If that's the case, combos like this are a safe option.