Teaming a duffle coat and black chinos is a surefire way to inject style into your wardrobe. A pair of dark brown casual boots is a savvy option to finish off this getup. During the colder months, when practicality is prized, it can be easy to settle for a less-than-stylish outfit in the name of practicality. This outfit, however, is a stark illustration that you can actually stay cozy and remain stylish at the same time in the colder months. The ability to wear combinations like this is one of the perks of heading into your 30s.