Part of "The Gag" range from Fetters, this style features an inflatable gag that you can pump with detached bulb included. The padded soft hide front conforms to the mouth while the strap pulls it tight on the back side and lock it using a padlock.

Unable to speak, the wearer won't have any other choice but surrender and wait for what comes next. 

The Gag, Inflatable comes with a 15mm Ifam padlock included.