Ergonomically designed, this diving mouthpiece is soft and flexible, resistant to deformation, long life, and able to connect firmly and tightly. Designed with a tongue drag, this diving mouthpiece has a comfortable bite, which prevents bite fatigue and brings a better diving experience. It is constructed of silicone material. The length of this diving mouthpiece is 5.1cm and width is 5.4cm. The bite mouthpiece is mainly used for scuba diving. Item Name: Diving Mouthpiece Material: Silicone Features: Good Flexibility, Bite Resistant, Ergonomic Size Details: L: 5.1cm or 2.01", W: 5.4cm or 2.13"(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 Diving Mouthpiece