The event started in 1984 and is California's third-largest single-day, outdoor spectator event and the world's largest leather event and showcase for BDSM products and culture. It has grown as a non-profit charity, and local and national non-profits benefit with all donations at the gates going to charity groups as well as numerous fundraising schemes within the festival including games, beverage booths and even spanking for donations to capitalize on the adult-themed exhibitionism. For $10 or more donations visitors get $2 discount for each drink purchased at the fair.