If you're on the lookout for an off-duty yet on-trend outfit, choose a crew-neck t-shirt and navy jeans. To give this getup a more casual feel, why not add a pair of white and brown high top sneakers to your look? In winter, when practicality is imperative, it can be easy to settle for a less-than-stylish look. However, this look is a stark illustration that you can actually stay snug and remain stylish at the same time in winter. When it comes to style for gents in their 40s, this look looks great on most.