The combo of a crew-neck sweater and tobacco chinos makes for a solid off-duty menswear style. You can get a little creative with footwear and class up this look by rounding off with a pair of dark brown leather casual boots. As you can see, this combo is a clear example that good style and dressing warmly for the colder months are not mutually exclusive. This ensemble should clear any doubts you had about dressing casually in your 30s.