This laid-back combination of a navy harrington jacket and beige jeans is very easy to pull together in seconds time, helping you look sharp and prepared for anything without spending a ton of time combing through your wardrobe. A great pair of black leather derby shoes is a simple way to upgrade this outfit. Seeing as fall is taking over, this getup appears a wonderful idea for the season. This combination demonstrates that as a 30-something gent, you have a wide range of outfit options.