Features 1. No Pain for Nose and Mouth: The silicone lining does not put too much pressure on your nose bridge to ensure that you are comfortable to wear. Food grade silicone that does not irritate your skin. 2. Better Seal Silicone Prevents Leakage, Anti-fogs: Snorkeling mask can tightly and softly wrap your full face to form a better seal, ensuring it dry inside all the time and prevents exhaled CO from reaching your mirror and causing fog. 3. Anti-Leaking Design: Above water, the ball goes down the air valve close, water is prevented from entering the mask. Under water ball goes up the air valve open, the air enters into breathing tube. This design will stop water entering through top of snorkel mask into your mouth. 4. 180-degree Panoramic Views: Our full snorkel mask with high-definition flat lenses that do not distort your view underwater, get you to enjoy high quality scenes. It has camera stand, you can use it underwater to catch vivid sightseeing. 5. Friendly Gift to Beginners: 180 degree full face snorkeling mask is easier to use than traditional diving mask and more friendly to beginners and youth, Additional removable camera mount enables you to install camera and records the dreamlike underwater world. It's a perfect present to family and friends; Use this sports snorkel mask and enjoy unforgettable vacation. Specification Material: PVC, Silicone Color: Blue, Black, Red, Green, Gray, Pink Size: S/M: Inner Diameter: 17 x 13 cm/6.7 x 5 inch, Outer Diameter: 23 x 19 cm/9.1 x 7.5 inch; L/XL: Inner Diameter: 19 x 13 cm/7.5 x 5 inch, Outer Diameter: 23 x 19 cm/9.1 x 7.5 inch Weight: 600 g Package Include: 1 Snorkeling Mask