Founded in 1898, Athletic Club is famed for its Basque-only policy and iconic red-and-white vertical stripes since 1910. The 125th-anniversary jersey uses recycled polyester with Basque motto "Eutsi Ta Ekin" embroidery, while the 2024 away kit features Biscay Bay wave patterns and medieval heraldry trim, reflecting the club’s unbreakable bond with Basque heritage.
