Combining a blue turtleneck with navy dress pants is a good option for a smart and polished look. During winter, when warmth is crucial, it can be easy to surrender to a less-than-stylish ensemble in the name of functionality. This ensemble, however, is hard proof that you can actually stay toasty and remain equally stylish during winter. That's the look for a gentleman in his thirties to portray you've got what it takes to go places.