This outfit with a grey bomber jacket and chinos isn't a hard one to score and is open to more experimentation. Black and white canvas high top sneakers are an effortless way to give a hint of stylish nonchalance to this ensemble. It's a smart option if you're putting together a well-coordinated ensemble for weird transition weather. When it comes to casual fashion for 20-year-olds, this look looks great on most gentlemen.