The senyera goes back to the T-shirt of the FC Barcelona
2020/21 Nike Barcelona Senyera 4th Jersey - SoccerPro
New Barça kit honours Club's roots by featuring colours of the Catalan flag
Barcelona Wear 'Old' Senyera Kit - Iridescent 21-22 Away Kit Banned By UEFA? - Footy Headlines
FC Barcelona on Twitter: "This jersey is more than a jersey. Get the ' senyera' jersey on http://t.co/c6LxkCHLOv http://t.co/yUnUowzCoG http://t.co/jrb3qpG9bU" / Twitter
Exclusive: Nike Did Actually Produce New Barcelona Senyera Kits - Footy Headlines
FC Barcelona 2020/21 Official 4th Senyera Kit - PES 2020 | PES 2021 - YouTube