A leather jacket is as versatile as all the obstacles and challenges you'll face during St. Patrick's Day. It'll keep you warm, is as stylish as it gets, and makes for a nice pillow when you're locked up in the drunk tank. And if any fellow reveler starts being an asshole, flexing on him in a Schott Perfecto leather jacket is the best way to get him to step off. 

Buy It Now at Schott NYC, $660