Beyond stylish and functional, this casual combo of a black long sleeve t-shirt and grey plaid chinos will provide you with amazing styling opportunities. And if you need to easily up the ante of this outfit with shoes, introduce casual boots to the equation. During the colder months, when warmth is critical, it can be easy to settle for a less-than-stylish look in the name of functionality. But this look proves that you totally can stay cozy and remain stylish in the colder months.