For a look that's effortlessly classic and gasp-worthy, wear a pea coat and a navy turtleneck. With shoes, go for something on the relaxed end of the spectrum with a pair of black leather desert boots. When it comes to outfit ideas for 30-something Millennial guys, this ensemble looks cool on most gents.
Try pairing a pea coat with a navy turtleneck and you'll assemble a sleek and sophisticated look. And if you wish to easily elevate your getup with one single piece, why not complete your ensemble with a pair of black leather derby shoes? A perfect example for any man who's still figuring out how to dress as a 30-year-old guy.