Try pairing a grey polo with blue jeans to assemble a seriously stylish and modern-looking casual ensemble. And if you want to easily dress down your outfit with shoes, why not complete this look with a pair of white athletic shoes? If you're not sure how to dress maturely, this outfit is a great example.
A classic and casual combo of a brown linen blazer and blue jeans can keep its relevance in many different situations. Get a bit experimental on the shoe front and tone down your outfit by rounding off with a pair of white athletic shoes. A no-brainer getup proper for 30-something Millennial men who prefer casual clothing.