(often associated with the brand XFGIRLS ) refers to a popular niche of gymnastics and contortion content focused on high-level flexibility, as well as a specific brand of athletic apparel designed for young gymnasts. Gymnastics Apparel: XFGIRLS
The brand (sometimes searched as Flexygirls) specializes in gymnastics leotards and activewear for children and teens.
In the digital space, "FlexyGirls" often refers to social media communities and influencers who showcase extreme flexibility and contortion. I Lived With The Worlds Most Flexible Girl For 24 Hours!