If it's ease and practicality that you're seeking in an ensemble, wear a dark green raincoat and white jeans. Let your sartorial expertise truly shine by finishing off your look with a pair of beige canvas high top sneakers. Off-duty looks for stylish 30-year-old gents aren't actually that hard, as you can see here.
Dark Green Raincoat with Beige Canvas High Top Sneakers Outfits For Men In Their 30s
This is hard proof that a dark green raincoat and navy chinos look awesome paired together in an off-duty look. A pair of beige canvas high top sneakers can effortlessly play down an all-too-classic getup. This combo should erase any doubts you had about wearing casual clothes in your 30s.