A dark brown print cardigan and khaki chinos have become a favorite pairing for many sartorially savvy guys. Got bored with this look? Introduce dark brown leather oxford shoes to mix things up a bit. So as you can see, it's super easy to look dapper and stay cozy when chillier weather hits, all thanks to getups like this. As a 30-something Millennial gent, you probably want to start dressing like an adult. If that's the case, combos like this are a fail-safe option.