This is a great Sure-Fit Comfortable Replacement Mouthpiece for your tired and worn-out regulator or snorkel mouthpiece! Features include: Sure-fit longer design Soft, comfortable silicone construction Less jaw fatigue Great replacement for your old mouthpiece Comes with plastic tie to keep the mouthpiece close to you at all times This is one of those overlooked little" items that is nice to have to compliment your scuba gear!