Go for something refined and timeless with a blue three piece suit and a red turtleneck. If in doubt about what to wear on the footwear front, introduce a pair of burgundy leather double monks to the equation. It's a viable option if you're picking out a kick-ass look for summer-to-fall weather. As a gentleman in his thirties, you probably want to start dressing in a more elegant manner. If that's the case, combinations like this prove useful as a source of inspiration.