1. Specification: 1. Type: Snorkel. 2. Package content: 1 snorkel. 2. Features: 1. It is equipped with five one - way exhaust membranes, which may help prevent the accumulation of exhaust gas and reduce potential accidents caused by lack of oxygen. 2. When diving, floating the floating plug of the snorkel at the tube opening may prevent water from entering the tube. 3. The shell has a wavy design. 4. The one - way membrane may prevent the exhaled carbon dioxide gas from staying in the tube. 5. It has a curved threaded shape and is made of silicone, which has relatively good performance. 6. The front - end design allows users to breathe without raising their heads. Even when tilted, water may not enter, which is suitable for snorkeling and swimming training. 7. It has a one - way drainage design. Bubbles may not affect the line of sight, and little water may remain in the tube. 8. It is equipped with an adjustable - angle bracket, which is convenient to adjust and may provide a stable and comfortable wearing experience. 9. The conical tube design may reduce resistance.