If the setting allows a casual ensemble, you can easily opt for a navy gilet and chinos. A great illustration for any guy who's still figuring out how to dress after 30.
Navy Gilet with Chinos Outfits In Their 30s
If the situation allows laid-back dressing, pair a navy gilet with chinos. If you want to immediately bump up this outfit with footwear, add a pair of dark brown leather casual boots to this ensemble. Perfect if you're looking for some incredibly inspiring off-duty style for 30-something guys.
Try pairing a navy gilet with chinos for a standout look. Put an elegant spin on an otherwise everyday outfit with grey suede derby shoes. So as you can see this getup is something you can totally wear as a man in his 30s.