Special patented new Aquastop valve: very efficient on up / down positions

- Dry guard: seals breathing tube when submerged

- Mouthpiece: drops away when not in use - great for scuba divers

- High-quality silicone mouthpiece: is comfortable and durable

- Angled anatomical mouthpiece: reduces jaw fatigue

- Lower purge valve: allows water to be quickly expelled

- Streamlined design reduces drag while swimming

- Adjustable clip for securing to any mask