This is the Scubapro Fusion Dry Snorkel for Scuba DIving, Snorkeling Features: plash protection limits water entry while surface swimming. Drop-away corrugated hose features an efficient purge valve. Durable universal snorkel keeper mates mask and snorkel securely together. High grade silicone mouthpiece stays comfortable in the mouth during long surface swims. A highly effective dry snorkel featuring a patented drop-away lower tube and an exchangeable pre-bent silicone mouthpiece.