Leather slippers, rugby shirt, and sweatpants ... Since 1957, GQ has inspired men to look sharper and live smarter with its unparalleled coverage of style, culture, and beyond.

When I was growing up, my father would train home from the office, change out of his button-up and tie, put on sweatpants, and throw on a rugby shirt. It was a long-sleeved maroon pullover with a ...