This combo of a beige turtleneck and charcoal check wool dress pants looks awesome, but it's extremely easy to replicate. And it's a wonder what dark brown leather double monks can do for the outfit.
Beige Turtleneck with Dark Brown Leather Double Monks Dressy Cold Weather Outfits
This combination of a beige turtleneck and a tobacco overcoat crosses the divide between elegant and relaxed. As for the shoes, you could follow a classier route with a pair of dark brown leather double monks.