1.180° large field of view and onepiece tempered glass: the adult snorkel set adopts HD shockproof, fog, thick tempered glass, which can effectively prevent impact, is not fragile, the index is higher. 180° extra wide field of view panoramic design you crystal clear vision and does not distort your view underwater, it is the choice to explore the underwater world cheerfully. 2.Nano antifog technology: the diving goggles lens adopts the latest nano antifog technology that can quickly dissipate water mist. so that the antifog effect is more effective and durable. Scratchresistant lenses provide a clearer view underwater. Rinse it with clean water and let it dry naturally after use. Please make sure to keep the lenses clean so as not to affect the antifog effect. 3.Foodgrade liquid silicone and antileak: the skirts of the snorkel mask are made of highquality food grade liquid silicone, 3D design adapts to the facial contours, double skirt adapts perfectly to the face without creating a gap that allows water to penetrate. Thanks to its soft and liquid silicone material, without leaving red stains on your face and it will not make your face allergic, and it is easy to clean after use! 4.Adjustable buckle design: the snorkeling set has an adjustable strap, which can be easily adjusted using the press studs on both sides and without much force. And it is onesided tightening buckles on both sides of the strap, this clever feature prevents any accidental loosening, so that a secure fit even in extreme situations. The adjustment strap is also made of soft silicone, which is comfortable but not tight, widens and relieves pressure on the back of the head. Dive with confidence and enjoy a care snorkelling adventure.