The Leather Pride flag is a symbol of leather subculture as well as kink and fetish subcultures more broadly, including BDSM. The flag was designed by Tony DeBlase in 1989.

The leather pride flag was designed by Tony DeBlase in Chicago, Illinois. DeBlase explained his decision to create the flag:

For the 20th anniversary of Stonewall, I felt that the time was right for the Leather men and women who have been participating in these same parades and events more and more visibly in recent years to have a similar simple, elegant banner that would serve as a symbol of their own identity and interests. Wikipedia