The 2023-24 Athletic Bilbao home shirt features the club's iconic red and white vertical stripes, updated with red stripes that are twice as wide as the white ones. This long-sleeve authentic jersey commemorates a historic season where Los Leones clinched the Copa del Rey title for the first time in forty years. The team also secured a strong fifth-place finish in La Liga, marking a successful return to European football while wearing this bold design.