You'll be surprised at how easy it is for any gent to get dressed like this. Just a charcoal blazer and a white and navy vertical striped dress shirt. Take this look a dressier path by sporting a pair of navy leather derby shoes. As you can see, it's extremely easy to look sharp and stay warm come colder days, thanks to this ensemble. Gents who wonder how to sport smart casual style as you make it through your 20s, this outfit should answer your question.