✔Anti waves, waterproof, and large volume air flow snorkel tubes, with silicone snorkel mouthpiece and hose. ✔Simple and fast to use, easy to attach mask strap, help you enjoy your diving adventures. ✔Water and air separated double waterproofing design, better ensures the life and safety of users. ✔Has a water stop system constructed by a large air inlet and a water stop valve. ✔Ergonomically designed comfortable mouthpiece to reduce soreness in the mouth while snorkeling. ✔The view brought by the toughened tempered glass lens allows you to enjoy unlimited scenery.