ANT FOGGING AND NO LEAKING: The snorkeling set features a stable dry floating valve design, and the flexible breathing tube allows for easy breathing and efficient drainage. The diving mask is equipped with tempered glass lenses that provide protection against strong ultraviolet rays. The lens surface has undergone special anti-fog treatment. CLEAR LENSES AND PANORAMIC VIEW: This mask includes a single tempered glass lens designed for snorkeling, swimming, and scuba diving. The skirt is made of soft, hypoallergenic, transparent silicone. The ultra-wide visibility from the single lens and the unique frame shape offer an extended panoramic view in all directions. FOOD-GRADE SILICON MATERIAL: The scuba diving mask is constructed from soft, transparent, food-grade silicone, offering exceptional comfort. The eco-friendly skirt material is gentle on the skin and resistant to allergic reactions. It is easy to clean after use and ideal for prolonged free diving sessions without discomfort.