One of the best ways for a man to style out a denim jacket is to pair it with grey sweatpants for a casual combo. Add a pair of white low top sneakers to the mix for extra fashion points. Planning a kick-ass getup can be challenging on its own. Add subzero temperatures into the equation, and the whole thing becomes all the more difficult. No worries, this here is your winter outfit inspiration. And if we're talking casual fashion tips for guys in their 20s, this ensemble looks good on most guys.