1)[Safety Airflow System] - The upgraded snorkel diving mask adopts a completely dry shell system, the length of the breathing tube is shortened and the diameter is enlarged, then the exhaust gas is discharged faster and breathing is smoother. The moving bead design can effectively prevent the water from entering the breathing tube to reduce the possibility of suffocation. 2)[ Anti-leak Design] - Snorkel mask follow the design of human face technique. The soft silicone skirt fits the skin better than conventional solid silicone, it perfectly fits various face shapes, maintains high sealing and comfort. This snorkel mask is safe and comfortable to give you a better experience while snorkeling, freediving or swimming. 3)[Ultra-clear & Anti-fog Design] - Snorkel mask is made of a high-resolution anti-fog flat lens with good light transmission. The nose cover is made of liquid silicone material that fits the nose perfectly, completely isolating the breathing duct from the lens and preventing fogging. This snorkel mask can also be used as swimming and diving goggles. The sports camara holder offers you the opportunity to capture the beautiful moment underwater. 4)[One Size] - Adjustable elastic double buckle straps make it easy to carry and remove. Also fits better for beginners; One size fits all different face shapes. The breathing tube is detachable and foldable, has a packaging weight of only 391g, is very easy to store and carry. 5) [High Quality Material & Multiple Uses] - The snorkel mask is made of high quality PC and food grade liquid silicone, safe and environmentally friendly, non-toxic, odorless, non-allergic. It can be used for swimming, snorkeling 5047 ",