Custom mouldable Technical Black coloured Regulator mouthpiece, the perfect way to reduce fatigue while using a regulator and provide maximum comfort during your dive. Using beaver sport's specially formulated marine grade silicone material allows you to mould the mouthpiece to the exact shape and sizes of your mouth by simply heating it in hot water and biting down to create your own personal perfect fitting. Replaces a standard SCUBA Diving Regulator First Stage Mouthpiece quickly and easily, secure in place using a cable tie.