If you don't take fashion too seriously, go for casually dapper style in a navy blazer and a polo. And if you want to easily polish up this outfit with a pair of shoes, why not introduce a pair of black suede tassel loafers to the mix? As a gentleman in his 30s, you probably want to start dressing like an adult man. In this case, looks like this are a surefire option.
A navy blazer and a polo are the kind of casually smart items that you can style a hundred of ways. This getup proves that well into your 30s your style options are far from limited.
For a look that's city-style-worthy and casually neat, consider teaming a navy blazer with a polo. As a gentleman in his thirties, you probably want to start dressing like a grown man. If that's the case, getups like this are perfect as inspiration.
Go for a casually classic outfit in a navy blazer and a polo. Inject your look with an added touch of sophistication by rocking blue suede derby shoes. As you can see here this combination is something you can totally wear as a 30-something guy.
This combination of a navy blazer and a polo is a tested option when you need to look casually sleek but have zero time to spare. If you're 30, take inspiration from combos like this to add more seriousness to your wardrobe.