1.Safety comes first: Please note that all fullface diving masks are designed for occasional snorkeling in shallow water and are not suitable for normal 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 are no gaps 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 seawater 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 hardened glass lens of the mask is fog, so you can see even the smallest things in the water. Wear this snorkeling set while swimming, diving or snorkeling and enjoy a 180° panoramic underwater landscape.