FINIS Swimmer's Snorkel Dry Top

FINIS Swimmer's Snorkel Dry Top The Swimmer's Snorkel Dry-Top by FINIS is a new patented design attachment to help 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.