Rock a long sleeve shirt with chinos for a casual and trendy ensemble. Add a different twist to an otherwise all-too-safe ensemble by wearing black and tan snow boots. In winter, when warmth is paramount, it can be easy to settle for a less-than-stylish ensemble in the name of convenience. But this ensemble is a vivid example that you can actually stay warm and remain equally stylish during winter. All in all, a perfect demonstration of casual style for guys in their 30s.