On days when comfort is a must, make a blue crew-neck sweater and navy jeans your outfit choice. For something more on the sophisticated end to finish your ensemble, introduce chelsea boots to the equation. In the winter season, when practicality is above all, it can be easy to surrender to a less-than-stylish getup in the name of convenience. However, this getup is a shining example that you totally can stay snug and remain stylish during the winter season. Sleeker getups like this work well on 30-year-olds.