Feature: 1. Thermoplastic Silicone: Environmentally friendly silicone material, non toxic and hygienic, durable and longer service life. 2. Comfortable Fit: Flexibly adjust the shape of the mouthpiece according to the tooth shape to fit your mouth. 3. Thermoplastic Type: Diving mouthpiece can be reshaped, it will be more comfortable, and it can effectively alleviate the feeling of oral discomfort. 4. Scope of Application: Commonly used for all kinds of breathing tubes and second stage regulator, ladies and children can trim them according to their actual conditions. 5. Moldable Shape: After soaking in boiling water below 80℃ for less than 10 seconds, it can be reshaped according to the shape of the teeth, which can solve the discomfort of the oral cavity caused by long term diving, so that you can enjoy the fun of diving more comfortably. Specification: Item Type: Diving Snorkel Mouthpiece Material: Thermoplastic Silicone Weight: Approx.50g/1.8oz Size: Length: Approx. 10cm/3.9in. Package List: 1 x Mouthpiece1 x Cable Tie Note: Too high ambient temperature or direct sunlight will cause the mouthpiece to age. Please keep it in a ventilated, cool and dry place.