For a look that's pared-down but can be dressed up or down in a multitude of different ways, go for a grey herringbone overcoat and white jeans. And if you want to easily amp up this look with footwear, why not introduce a pair of dark brown leather chelsea boots to the mix? Dressing smartly is the key to surviving extra cold temperatures, but this ensemble is a striking illustration that you can do it with style. All in all, a nice idea if we're talking outfit ideas for 30-year-old guys.