If you're in search of a casual yet sharp outfit, consider teaming a blue horizontal striped long sleeve henley shirt with grey chinos. Both pieces are totally comfortable and will look great together. Throw in a pair of olive leather high top sneakers to loosen things up.
As you can see here, being a dapper dude doesn't require that much effort. Just wear a navy blazer with black chinos and you'll look awesome. For something more on the daring side to finish off this getup, choose a pair of olive leather high top sneakers.