For a neat and relaxed outfit, team a varsity jacket with white sweatpants — these two items work really well together. Relaxed looks for stylish 30-something Millennial gents aren't actually that hard, as you see.
White Sweatpants with Varsity Jacket Outfits For Men In Their 30s
For the style that's as chill as it can get, wear a varsity jacket and white sweatpants. White canvas low top sneakers will bring an elegant twist to an otherwise simple getup. This outfit shows that passing the big three-oh is no reason to stop dressing casually.