For sharp style with a modern twist, pair a black turtleneck with black corduroy dress pants. When not sure about the footwear, go with dark brown suede chelsea boots. As you can see here, it's very easy to look awesome and stay toasty when cooler weather comes, all thanks to combinations like this. As a man in his 30s, you want to start dressing like an adult. In this case, combinations like this become a great source of inspo.