What a guy in a fraternity typically wears. Any one person can look at that person's clothes and know they are in a frat.
For Example, "Look at the fratagonia that guy has on" Popped-collar, pastel polo shirts. Casual loafers without socks, plaid shorts, Ray-Bans with the band to keep them around the neck, a trucker hat with the polo shirt, the long parted hair accentuates the clothes. A Columbia fleece jacket, Patagonia also works as this word was inspired by it. Grey early 90's New Balances.