Flexible Silicone for Leak-Proof, Comfort Seal: supple silicone, which the dive mask to the shape of your face for a much more comfortable fit and watertight seal. Your snorkeling or scuba diving experience will be much more enjoyable with no more leaks or discomfort. Tempered-Glass Lens for Safety: Forget the other snorkel gear that use flimsy plastic lenses! Our single lens scuba mask uses quality tempered glass, which resists scratching and shattering giving you peace of mind and a much better experience. Snorkeling Gear for Adults Rugged Enough for Scuba Diving: Thanks to its sturdy construction, your mask can stand up to all kinds of wear - from snorkeling in the pool water to deep-sea scuba diving to safe recreational scuba diver depth limits. A snorkel mask should help you see better, not obstruct part of your view. Now you can enjoy all the underwater scenery clearly. Name:Diving Glasses Adaptation range:snorkeling diving Suitable for the crowd:young grown up Now equipped with anti-fog film, please gently tear off the first layer of protective film of the inner tempered glass before use, the second layer of German anti-fog film has been attached to the diving mask. Please protect the mask well during use,Strengthen the hardness of the window glass of the mask, so that it is not easy to be damaged during transportation and use. The newly improved new version of anti-fog treatment, the effect is good, and the duration is long Notice: The style of applying anti fog film can only prevent fogging, mainly due to the breathing habits of the diver themselves,Since diving is a high-risk industry, you must go to a formal training institution for training and learning before diving, training, or sightseeing. (important) Colour:Black Material:Tempered glass + silicone Size:One Size (Face WidthGreater than 12CM) Package Contents: 1 * Dive Snorkel Mask Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.