For a look that's very straightforward but can be smartened up or dressed down in a ton of different ways, rock a suit with a navy turtleneck. Take an otherwise dressy outfit in a more informal direction by finishing off with black work boots. Overall, a savvy option if we're talking style tips for 30-something Millennial gents.
Black Work Boots with Suit Smart Casual Warm Weather Outfits In Their 30s
A suit looks especially refined when combined with a black turtleneck for a look worthy of a refined gent. And it's amazing how black work boots can jazz up an outfit. So if you're on the lookout for outfit inspo for dressing as you head into your 30s, this getup is a wonderful example.