Osasuna's third shirt 2024/25 is inspired by the Renaissance-style military fortification built at the behest of King Philip II, a significant cultural element that links the team to its rich historical heritage. It features a bold, modern design in a sleek shade of black with grey detailing. It features a Korean collar with customised inner ribbon inscribed with ‘VIBRA EN TI ZUGAN TAUPAKA’. On the outer back collar, also in silver, the pentagonal star-shaped plan of the Ciudadelal's ramparts and military fort.