So as you can see, it doesn't take that much work for a man to look dapper. Go for an olive blazer and a blue long sleeve shirt and be sure you'll look awesome. If you wish to effortlessly spruce up this look with one single piece, why not introduce a pair of brown leather oxford shoes to the mix? A great summer pick, you can work this ensemble throughout the summertime. As a 30-something man, you want to start dressing with more class. That's when looks like this are a lifesaver.