This polished pairing of a charcoal check suit and a grey cardigan is a popular choice among the fashion-forward chaps. You know how to bring some extra elegance to this getup: black leather derby shoes. As you can see, it's super easy to look awesome and stay comfy when colder weather arrives, thanks to this outfit. When it comes to style tips for 20-year-old men, this combination looks cool on almost any gent.