This refined combo of a dark green plaid double breasted blazer and black dress pants is a common choice among the sartorially superior gents. Complete your look with a pair of white leather low top sneakers to inject an air of stylish effortlessness into this outfit. As you can see, this ensemble is a really nice idea, especially for in-between weather, when the temperature is getting lower. And if we're talking fashion for gents in their 30s, this look is perfect.