Marrying a grey turtleneck and a black three piece suit will prove your outfit coordination chops. Black leather derby shoes are a good pick to complete this ensemble. When leaves are falling down and temperatures are getting lower, you'll appreciate how perfect this outfit is for awkward transition weather. Definitely a good pick if we're talking style for young guys.
One of the classiest ways to style out such a staple item as a grey turtleneck is to pair it with grey wool dress pants. Add black leather derby shoes to the equation and you're all done and looking incredible. Seeing as temperatures are falling, this ensemble seems a savvy choice for the time in between seasons. Wear this combo to create a more adult look as a 20-something gentleman.