This off-duty combination of a black crew-neck sweater and jeans is a winning option when you need to look sharp but have zero time to put together an ensemble. A pair of black leather chelsea boots will effortlessly dress up any outfit. Overall, a smart idea if we're talking style for 30-something Millennial gents.
For a relaxed outfit, Make a black crew-neck sweater and jeans your outfit choice. Put a more refined spin on this outfit by finishing with a pair of black leather derby shoes. Well into your 30s, you probably want to start dressing more like a mature gentleman. If that's the case, looks like this are perfect as inspiration.