Born To Roar: Athletic Club & Castore present our 25/26 Fourth Kit

Athletic Club and Castore have released the Lions' fourth shirt for the 2025/2026 season. The kit will be worn for the first time on December 14 during RC Celta vs Athletic Club in Vigo and it is now avalaible in our official shops. 

Visually striking, the shirt combines red and black with a pattern that becomes visible from a certain distance, revealing the image of Athletic Club’s lion. The collar is round and black, and on the back of the neck the same lion hidden within the pattern appears once more. This time smaller, yet clearly distinguishable. The crest is also in a red and black duotone. Black shorts and black socks complete the outfit, reinforcing the lion's visual power.

This kit's slogan is Born To Roar, referring both to Athletic Club's history and to the people who have made the club what it is for over a century now: the players (team) and the Athleticzales (fans).

A lion’s roar is much more than a sound. It is a feeling, an emotion that gets under your skin. This is what this fourth kit represents. It's much more than just a shirt. When that roar is heard, it goes far beyond San Mames. It's not only the 11 players on the pitch who roar, but the entire fanbase.

Members of the Athletic family learn to roar from a young age. We inherit it.
We roar no matter the results or the situation.
We feel it.
We wear it.
Born To Roar.