Proprietary top deflector keeps snorkel DrynErgonomic design reduces resistance and dragnOne way purge valves drains snorkel quicklynSilicone rubber mouthpiece reduce jaw fatiguenEasy airflow and comfortable breathingnThe Phantom Aquatics Dry Snorkel features a stylish, functional design that prevents water from entering the tube. The dry top has a buoy that raises and seals the air chamber when submerged.