For men, “professional attire” is pretty straightforward. Unless a job requires a uniform, a man’s work wardrobe typically falls into one of these classes: suits and ties if the dress code skews formal, dress pants with button-downs if it’s semi-forma, slacks with crisp shirts if it’s laid back, and finally, jeans and t-shirts if it’s a work setting with very young men or older men who say “fuck it!”