For an outfit that's super easy but can be smartened up or dressed down in a myriad of different ways, consider pairing a navy blazer with light blue jeans. To bring a little depth to your look, complement this look with chelsea boots. This look is probably what you're looking for as a 30-something guy.
Navy Blazer with Chelsea Boots Warm Weather Outfits For Men In Their 30s
A navy blazer and blue jeans make for the perfect base for an outfit. Take a more elegant route with footwear by finishing off with a pair of chelsea boots. Guys who are curious how to dress well in your thirties, you have your answer.