A multi colored crew-neck sweater and navy chinos are an essential combination for many fashionable gents. For something more on the dressier end to complete this ensemble, complete your outfit with a pair of casual boots. During the winter months, when warmth is key, it can be easy to settle for a less-than-stylish getup in the name of convenience. But this getup is a striking example that you can actually stay snug and remain equally stylish during the winter months. No doubt, a great option when it comes to outfit ideas for over-30 gents.