If you're a fan of classic combos, then you'll appreciate this combination of a military jacket and a white and blue crew-neck t-shirt. Add a pair of black and white canvas low top sneakers to the equation and off you go looking boss. So as you can see, it's very easy to look seriously stylish and stay snug when chillier weather arrives, thanks to this ensemble. When it comes to casual clothing for guys in their 20s, this getup is perfect.