Few county jerseys are as instantly recognisable — or as closely tied to a place — as Mayo’s. Where did the colours come from, and how did the jersey evolve into the one generations of Mayo supporters know today? Michael Foley and Ciarán O’Hara dig into the archives to trace the story of the Mayo jersey, separating tradition from fact and uncovering how the green above the red became one of Gaelic football’s most enduring identities.