A dark brown short sleeve shirt and brown chinos are absolute menswear staples that will integrate perfectly within your casual wardrobe. Rounding off with dark brown woven leather derby shoes is an effortless way to bring an extra dose of class to this outfit. So as you can see, it's very easy to look amazing and stay warm when colder weather comes, all thanks to getups like this. This combination is the perfect answer to the question of how to dress appropriately for your age in your thirties.