For a casually classic ensemble, try pairing a navy overcoat with beige chinos — these items go pretty good together. If you're hesitant about how to finish, a pair of black leather casual boots is a foolproof option. During the colder months, when warmth is above all, it can be easy to settle for a less-than-stylish look. But this look is a good illustration that you totally can stay cozy and remain stylish at the same time during the colder months. Those wondering how to rock smart casual looks in your mid-20s, you have your answer.