This combination of an olive long sleeve shirt and black plaid chinos will be a true manifestation of your expertise in menswear styling even on off-duty days. Ramp up the classiness of this getup a bit by rocking brogues. There are a variety of ways to look neat and live through the heatwave, and this here is one of them. Gentlemen who are curious how to wear classic and casual looks in your mid-20s, you have your answer.