For a look that's city-style-worthy and casually neat, marry a violet blazer with red jeans. Our favorite of a multitude of ways to finish this getup is with a pair of low top sneakers. You can take cues from getups like this if you've passed the big 3-0 and you want to take a more mature direction in your style.
Red Jeans with Low Top Sneakers Smart Casual Warm Weather Outfits For Men In Their 30s
This combo of a navy blazer and red jeans comes in useful when you need to look seriously stylish in a flash. Take your outfit a more informal path by rounding off with a pair of low top sneakers. In this, any 30-year-old guy is guaranteed to put most of his peers to shame.