Professional Scuba Diving Silicone Mask Snorkel Set Anti-Fog Tube Swim Equipment

Snorkel size: about 45 3 11cm/17.7 1.2 4.3 in. Leak proof and anti-shock: PC material with snorkel, anti-shock and wear resistant. Silicone water-stop valve plate, with great leak proof effect. Fully dry breathing tube: the top valve has a float valve.