This smart casual pairing of a brown overcoat and grey chinos is extremely easy to put together in no time, helping you look dapper and ready for anything without spending too much time searching through your closet. Not sure how to finish off? Add aquamarine athletic shoes to the mix to shake things up. So as you can see, it's a dapper, not to mention season-appropriate, getup to keep in your transeasonal rotation. This outfit is the perfect answer to the question of how to dress as you slip into your 30s.