Consider wearing a grey suit and a turtleneck for incredibly sharp attire. Our favorite of a myriad of ways to round off this ensemble is with dark brown leather chelsea boots. If you're often not sure how to dress as a 20-year-old gentleman, this ensemble is a vivid example.
You're looking at the irrefutable proof that a grey suit and a turtleneck look awesome when worn together in a polished outfit for a modern gentleman. Black leather derby shoes are an easy pick here. So if you're after a modern yet mature combo for a younger man, look no further.