Panfingender or Pangenderfin is a combination of pangender and fingender. It is a gender for when one is all genders that are feminine in nature (FIN) and available to those of one's life experience and culture. The genders one experiences may be fluid or static.
The flag appears to be based off of the pangender flag, but the other stripes have no known meaning.
An alternate flag was created by Wiki user Rabbox on February 7, 2021. The outer pink stripes represent female and female-aligned genders, the salmon stripes represent feminine-aligned (but not female-aligned) genders, like juxera, the light pink stripes represent feminine-neutral genders, such as faesari, and the middle gradient represent a combination of all feminine genders, with colors taken from the bottom three stripes of the original panfingender flag.