This off-duty combination of a navy plaid harrington jacket and navy chinos is very easy to pull together in no time, helping you look amazing and ready for anything without spending a ton of time going through your closet. A pair of white canvas low top sneakers is a great option to round off your getup. So if you're looking for an outfit that's dapper but also feels totally spring-ready, this one fits the task well. This combination should clear any doubts you had about wearing casual clothes as a 30-something Millennial gent.