A black tank and light blue ripped jeans are a life-saving off-duty combo for many style-savvy gentlemen. For something more on the smart end to round off your getup, complement your outfit with a pair of low top sneakers. As you can see, it's extremely easy to look seriously stylish and stay cozy when cooler weather comes, thanks to this outfit. All in all, a perfect demonstration of casual fashion for 30-something Millennial gents.