This combo of a grey crew-neck sweater and black patchwork jeans is proof that a pared down off-duty look can still be really interesting. And if you need to easily polish up your outfit with one item, complement this ensemble with a pair of black leather loafers. Seeing as it is getting colder every day, this look is a viable idea for the season. Wear this outfit to demonstrate the world your maturity as a 30-year-old man.