A black blazer and burgundy chinos are the kind of casually refined items that you can wear for years to come. Round off this look with dark brown leather derby shoes to switch things up. There are plenty of ways to look neat and survive the heatwave, and this here is one of them. As you're maturing from your 20s to your 30s, you probably want to start dressing like an adult. That's when looks like this are a fail-safe option.