The mouth expander ring is made of quality leather on a 2 cm wide strap, in the center of the front, with a 5 cm diameter ring. On request, we can make it with a different size ring, please indicate this in the comments section. Its adjustability was solved with a traditional snare buckle at the back. An excellent accessoire for BDSM games. It is a custom-made product, so it is important to specify the exact size based on the attached photo. We make sure that the specified size can be adjusted smaller or larger with a buckle. On request, we can make it with a smaller or larger ring, please let us know in the comments section.