Keep things casual for the day in this functional combo of a blue denim shirt and olive chinos. Add brown leather casual boots to the mix for an instant style boost. In winter, when warmth is paramount, it can be easy to surrender to a less-than-stylish look in the name of functionality. But this look is a practical illustration that you totally can stay warm and remain stylish at the same time in winter. And if we're talking style tips for young men, this combination is ideal.