Dry Breathing DesignThere is a specialized float valve mechanism on the top of the tube, when the float is above the water, it will descend and air will enter the snorkel; When the snorkel drops below the waterline, the float will rise to prevent water from entering the snorkel. It ensures you have a great diving, snorkeling and swimming experience. This snorkel set is perfect for professionals and beginners. No Leakage & Perfect Fit Snorkeling set with adjustable headband is applicable to almost all face shapes, suitable for men and women. Soft silicone skirt reduces water pressure on the face and seals the face well. You don't worry about water leaking. heat-treated of our snorkel mask gives you high-level, scratch-resistant and impact-resistant eye protection. It minimizes visual and bulk obstructions, you can see fish, coral and other sea creatures clearly and ensure safe underwater activities. Food Grade Silicone Material Suction mouth of food-grade silica gel comfortably in the mouth, without jaw fatigue and no peculiar smell, which allows prolonged use without any discomfort. MultifunctionalSuitable for children and adults. Ideal for diving, snorkeling, swimming, spearfishing and other underwater activities. With our dry snorkel technology and pressure change valve, you'll never have to worry about swallowing mouthfuls of saltwater again Number of Shipments: 1 * Snorkeling Mask, 1 * Action Camera Support