Tell your lover to open wide and then watch them fidget as they try to close their mouth again. The spring action allows the gag to automatically widen to 3". The wearer cannot close their mouth at all, nor can they just spit out the gag because of the plastic stoppers that are set behind the teeth. Now you can have your way with their oral cavity. If you want to remove, then simply use fingers to press the rear portion of the gag. It makes a great item for those who have oral fixations or those who simply just love oral play.