To create a casual ensemble with a modernized spin, go for a white and black crew-neck t-shirt and chinos. Introduce a pair of beige suede desert boots to this outfit to easily ramp up the fashion factor of your ensemble. You see that just because it's freezing outside doesn't mean your getups can't be both warm and seriously stylish. Amazingly stylish, this pairing is also totally age-appropriate.
For an on-trend outfit without the need to sacrifice on comfort, we like this pairing of a white and black crew-neck t-shirt and chinos. You can stick to a more elegant route when it comes to footwear by sporting a pair of black and white leather brogues. You see here that just because the mercury dropped below zero doesn't mean you can't still look good. This combo shows that as a guy in his 40s, you have a wide range of outfit options.