A beige crew-neck sweater and grey wool chinos are both versatile menswear must-haves that will integrate wonderfully within your casual wardrobe. Dial down the casualness of your look by slipping into a pair of brown leather casual boots. As you can see, this combo is a good illustration that good style and dressing warmly for the colder months are not mutually exclusive. This combo is perfect for gents in their thirties.