Comfort No Bite Silicone Regulator Mouthpiece [Black Version] by Trident Hypo allergenic, Long Lasting, comfortable Mouthpiece made from top quality silicone. Superb no need to bite ergonomic Design thats more comfortable for most people. Will fit the vast majority of Regulators & Snorkels. Supplied inside sealed / wrapped packaging. Tie Wrap Securing Fastener Included.