This casual combo of a raincoat and black chinos is very easy to put together in no time, helping you look amazing and ready for anything without spending a ton of time combing through your wardrobe. For something more on the casual and cool end to round off this look, introduce a pair of high top sneakers to the equation. Can you see how very easy it is to look on-trend and stay cozy when cooler weather hits, all thanks to looks like this? This outfit proves that as a 20-year-old guy, you have a wide range of outfit options.