Athletic Club have revealed the away kit for the 2025–26 season.
The Castore shirt features a deep navy base, continuing the tradition of blue away kits first introduced in 1969. Since then, the colour has been used in several key moments, including the 1977 UEFA Cup final against Juventus.
This season’s design includes light blue trim on the collar, sleeve cuffs and shoulders. The Athletic Club crest appears on the left chest, with the Castore logo on the right and Kutxabank as the central sponsor. DIGI branding is printed on the lower back of the shirt.
A distinctive detail is found on the back of the collar; a symbol combining the Basque flag, the Ikurriña, with the eguzkilore, a traditional thistle flower associated with protection in Basque culture.
The jersey is made from Castore’s AerTek performance fabric, designed to enhance breathability and comfort during matches, and is paired with matching navy shorts and socks to complete the full kit.
View the: Athletic Bilbao 25/26 Home Kit
View the: Athletic Bilbao 25/26 Fourth Kit
Click to enlarge images
