In their upcoming match at San Mamés, FC Barcelona will wear a modified version of their 2023/24 second kit known as 'Mamba Mentality' for the first time. Unlike the original design, which included black shorts and socks, the team will now don gold shorts and socks matching the jersey.

This adjustment was necessary because Athletic Club's home kit features black shorts and socks, potentially causing a color clash. The final kit choice is made by the La Liga match director via the official 'Kit Selector' app. If any irregularities are noted before kickoff, the referee, together with the Technical Refereeing Committee, may order a kit change to comply with regulations.

Barcelona has previously worn the original 'Mamba Mentality' kit three times this season, achieving one win and two losses. The adaptation aligns with common practices seen in other sports like women's basketball, where kit variations are regularly used for practicality and rule compliance.

Such measures ensure color distinctions remain clear, preventing confusion for players and officials, thereby enhancing match quality and transparency within La Liga.