Moldable Mouthpiece is your customized answer to a comfortable dive. It’s offset for your upper and lower jaw. This allows you to get a precise fit that conforms to the physical shape of your mouth. Less physical exertion is needed when using a second stage with this mouthpiece. It comes with a storage plug that protects the regulator from debris when not in use. The Rite Bit Moldable Mouthpiece fits most standard regulators.