1. Safety comes first: Please note that all fullface snorkeling masks are designed for occasional snorkeling in shallow water and are not suitable for professional diving, spearfishing or intensive swimming. When snorkeling, you must take regular breaks and must not snorkel alone. 2. Highquality material: The process has been improved, seamlessly packaged, there is no gap between the internal and external PC plastic frame assembly and the waterproof effect is better. Improved material, liquid silicone, shockproof and durable, with high adaptability and more comfortable wearing comfort. 3. Split design: By using a breathing tube system with a waterair split design, the sea water entering the breathing tube can be easily directed into the independent drainage container and the air can be directed into the user's mouth. 4. Antifog lens: The crystalclear lens of the mask made of tempered glass is fog, so you can even recognize the smallest things in the water. Wear this snorkeling set while swimming, diving or snorkeling and enjoy a 180° panorama underwater.