You know and we know that there are literally millions of bondage options to choose from, but when you're looking for the silence and overall oral control that only a great gag can offer, we're recommending the Sinful Bar Gag from ns novelties.  

This  bar style gag fits under the teeth and spreads the lips. Buckle up the pink faux leather band around their head after positioning the bit gag. The tighter the band, the tighter the gag against their lips.  As with any gag, please make sure to check in often to make sure your playmate can comfortably breathe and swallow.