Create your own custom mouthpiece to suit your own personal dental profile. The most outstanding benefit of having a properly fitted mouthpiece is less physical exertion is needed when using a second stage equipped with this mouthpiece, leaving the diver with significantly reduce fatigue. The Trident Rite Bite Moldable Mouthpiece is easily molded to fit perfectly in your mouth by simply immersing the mouthpiece into 203 Degree F (95 Degree C) water for 30 seconds, place it inside your mouth, biting down and sucking on it for just 30 seconds. Rinse with cold water and then recheck fit. Repeat the process as necessary if you don't like the fit the first time. Simple as that! Included attachment protects debris from getting into regulator during storage. Offset for both upper and lower jaw and fits most standard orifice regulators. Comes with easy instructions, installation strap and is available in multiple colors.