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● Silicone mask This is a highly functional adult 2-piece snorkel set with drain valve; Unisex; 10 years and up; Double skirt to prevent water from entering the mask; Made of tempered glass that is hard to break and prevents injury; Use silicone for mouthpiece or mask skirt. Excellent durability and consistently stable use; Pentagon cross-section pipe designed to reduce water resistance; One-touch adapter for easy removal and removal of the mask. Equipped with a drainage valve that allows water to be easily removed from the pipe; One-touch belt that can easily adjust the length of the mask strap; 10-stage slide adaptor ensures the height of the snorkel at a comfortable location; The snorkel tip is safe and safety color scheme. Even if you wear the waves, the water will still be Uses a hyperdry top that is difficult to get in.