For an outfit that's extremely easy but can be styled in a myriad of different ways, choose a dark green shirt jacket and blue jeans. Brown leather desert boots finish off this outfit quite well. In winter, when warmth is essential, it can be easy to surrender to a less-than-stylish look. But this look is a striking illustration that you totally can stay warm and remain equally stylish in winter. Rest assured this combo is something you can totally wear as a guy in his thirties.