If the setting permits casual dressing, consider wearing a navy turtleneck and black jeans. When in doubt about what to wear in the footwear department, go with low top sneakers.
Navy Turtleneck with Low Top Sneakers Casual Chill Weather Outfits For Men
Consider teaming a navy turtleneck with white jeans if you seek to look casually cool without too much effort. A pair of low top sneakers looks perfectly at home teamed with this ensemble.