1.Antileak protection: diving goggles are made of tempered glass and elastic with a good impact resistance, which guarantees a very good fit and an excellent seal. 2.Clear vision: The ergonomic design and large lenses provide maximum wide view underwater while snorkeling and diving. The specially hardened lenses, the diving goggles provide the visibility underwater. 3.Easy to adjust: the diving goggles have an adjustable buckle for easy adjustment of the headband. The diving goggles adapt to the head, and can prevent water from entering your eyes. 4.Antifog and scratchresistant: the mask does not fog up and is well sealed, so that moisture is reduced when swimming underwater. The inside of the lenses is coated with an antifog agent and the outside of the lenses are scratch resistant.