Plug up that hole when you are not using it Force your submissive to keep their mouth open at all times with this sadistic and unique head harness. Even just seeing it on your slave will turn you on. Have your way with their body, pleasing, teasing, tormenting? and listen to their muffled moans and gasps through the muzzle. Remove the stopper to hear them better or to invade their mouth Your naughty little pet will feel sensually helpless in this head harness. Measurements: Gag extends 1.35 inches into the mouth. Hole has inner diameter of 1.45 inches and an outer diameter of 1.65 inches. All straps adjust to fit most sizes. Material: PU leather, ABS, metal. Color: Black.