A camel overcoat and a teal fair isle crew-neck sweater are an easy way to introduce some polish into your current off-duty lineup. As for footwear, add a pair of charcoal leather casual boots to the equation. So as you can see, it's very easy to look on-trend and stay toasty when colder weather comes, thanks to this outfit. Interested in outfit ideas for 30-year-old men? This combination is pretty inspiring.