Adidas has for some time now launched specialty kits beyond what are now 3 standard kits.
In the case of FC Bayern 3 kits are launched over summer for the new season. One kit follows for the October Fest during the month of September/October.
After New Year either a 4th kit or a retro inspired icons shirt tends to follow.
The jersey on display right here is the kit Bayern Wiesn kit back from the season 2022/23. A dark red color in the scheme of claret, bordeaux or wine + gold as constrast.
It almost looks like a piece inspired by military uniforms in ancient Rome.
The Bayern October Fest kit is typically only worn once for a home match during the October Fest period.