This laid-back pairing of a turtleneck and blue jeans is ideal if you want to go about your day with confidence in your outfit. For a classier feel, why not throw in a pair of white derby shoes? Keep this combo in mind come spring, and we guarantee you'll save a lot of time trying to pick out an outfit on more than one occasion. As a 30-something Millennial gentleman, you probably want to start dressing like a grown-up. That's when inspiration like this comes in useful.