For sharp menswear style without the need to sacrifice on functionality, we like this combination of a yellow short sleeve shirt and black chinos. Add a pair of slip-on sneakers to the mix et voila, this getup is complete. This getup isn't a hard one to score and it's season-appropriate, which is most important when it's super hot outside. Guys wondering how to rock cool off-duty outfits as you head into your 30s, this outfit should answer your question.