Snorkel Dry-Top - For Swimmer's Snorkel Patented design helps keep your snorkel free of water. * When submerging under the water, a small buoy inside the Dry-Top rises, effectively sealing the tube. * Water is then prevented from entering, keeping your snorkel completely dry! * When you surface, the buoy drops, opening the air passage for maximum airflow. * For use on FINIS Swimmer's Snorkels only. * Not compatible with the "Freestyle Snorkel" or "Learn-to-Swim Snorkel". Note that using the Snorkel Dry Top will slightly restrict air-flow into the tube. The Dry-Top attachment is recommended for experienced users. Add Your Tags: Add Tags Use spaces to separate tags. Use single quotes (') for phrases.