A double breasted blazer and blue skinny jeans are absolute mainstays if you're planning a smart casual wardrobe that holds to the highest menswear standards. To introduce some extra depth to this ensemble, introduce black leather derby shoes to the equation. As you can see here, it's super easy to look amazing and stay toasty when chillier weather arrives, thanks to this look. A good illustration for any gentleman who's not sure how to dress as a 20-year-old gent.