Flaunt that you know a thing or two about men's fashion in a black long sleeve t-shirt and navy jeans. Complete your ensemble with a pair of black leather low top sneakers and you're all done and looking amazing. As you can see, it's extremely easy to look sharp and stay comfortable when cooler weather comes, all thanks to looks like this one. Ideal if you're looking for some seriously inspiring off-duty style for 20-somethings.