A navy nylon shirt jacket and cargo pants will infuse extra style into your current off-duty wardrobe. Balance your ensemble with a more relaxed kind of shoes, such as these high top sneakers. So as you can see, it's extremely easy to look amazing and stay comfy when colder weather hits, all thanks to looks like this one. Take cues from ensembles like this if it's time to add seriousness to your 20-year-old's look.