An advertisement for a women’s sporting brand backed by famed female athlete Riley Gaines has been banned by TikTok for defending the role of genetic women in sports.

The company, XX-XY Athletics, was founded by former Levi Strauss & Co. President Jennifer Sey, who spoke out about the ban on the advertisement on X, formerly Twitter.

“If you think girls’ and women’s equality matter, stand up,” the ad said. “If you think girls’ and women’s sports matter, and you want your daughters to have the same opportunity you had, stand up. If you know that it isn’t fair — or safe — to allow males to compete in girls sports because it’s, well, obvious, stand up.”

“Don’t be cowed by people who call you a bigot. You’re not a bigot,” it said. “Don’t let men tell us how to be ‘good’ girls. Don’t let others tell you you just need to be quiet, sit down, be nice. It’s not nice to further a lie. It’s not mean to believe in women’s equality. We deserve our own sports, privacy, fairness, safety. We deserve a chance to compete, and win. So don’t be nice. Don’t be careful. Be honest, be brave, fight for women. We’ve come too far to give up now. And if you agree with that, stand up and stand with us.”

The CEO also shared a letter she received from TikTok which explained that the company account would still be active but the ads would not be permitted.

And here’s the notification lest I be accused of lying by my “fans.” pic.twitter.com/lUJ6cjuDYQ

— Jennifer Sey (@JenniferSey) June 18, 2024

“Our review indicates that your advertising content may violate TikTok’s advertising policies by featuring offensive content,” the letter said, advising that the could appeal the decision with a request submitted within 180 days.

“Speak up. Stand up. Vote with your dollars. Don’t buy brands that don’t know what a woman is. Truth is counting on you,” the CEO said in a subsequent post.