This Fetish Fantasy Extreme® Silicone O-Ring Gag is exactly what you need to keep your submissive quiet while keeping their mouth wide open for whatever you want to put in it! The metal O-ring is lined with medical-grade silicone that is tasteless and gentle on teeth and gums, while being strong and durable. The belt-style straps, also made from Elite silicone, easily adjust to fit most sizes.