This combination of a long sleeve shirt and black jeans is outrageously stylish and yet it looks relaxed and ready for anything. Why not introduce a pair of black derby shoes to the mix for an air of elegance? Dressing smartly is the key to surviving cold temperatures, but this ensemble proves that you can accomplish this with style. As a gent in his thirties, you probably want to start dressing like an adult man. In this case, combinations like this are perfect as inspiration.