The Jako Mainz 24-25 Fastnacht football shirt takes inspiration from the jester figure "Schwellkopp Karlchen" and his di...stinctive chequered jacket. The Mainz 2024-25 Fastnacht kit features a bold, multicolored diamond pattern, which moves beyond the four-color palette of previous years. Details include a jester’s cap, a four-color collar and sleeve cuffs, plus a custom streamer-inspired kit print.