This combo of a black denim jacket and dress pants is a surefire option when you need to look really classy. On the fence about how to finish? Introduce a pair of black and white high top sneakers to the equation to change things up a bit. This ensemble is our idea of perfection for warm summer days. As a 30-year-old guy, you probably want to start dressing like a grown man. In this case, outfits like this are perfect as inspo.