Their mouth will never close once the Fetish Fantasy Double Fish Hook Restraint is locked into place. Coated in rubber for improved comfort, each of the hooks is placed into the sides of the mouth and fastened via the rear buckle clasp. The head strap on the Fetish Fantasy Double Fish Hook Restraint can be adjusted to fit most sizes and quickly removed when required. You also get a Fetish Fantasy Eye Mask with the Double Fish Hook Restraint.