Soft and flexible, this diving snorkel regulator is resistant to deformation, has a long life span and comes with a tie-down strap for a strong and tight connection. With a tongue drag design and a comfortable bite, this diving snorkel regulator prevents bite fatigue and provides a better diving experience. It is constructed of food-grade silicone material. The length of this bite mouthpiece is 5.4cm and width is 5.1cm. The bite mouthpiece is mainly used for scuba diving. Item Name: Bite Mouthpiece Material: Food-grade Silicone Features: Portable, Ergonomically Designed, Non-deformable Application: Second Stage, Breathing Tube Size Details: L: 5.4cm/2.13", W: 5.1cm/2.01"(Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Bite Mouthpiece 1 x Tie