Anti fog and no leakage: The snorkeling kit adopts the most stable dry float valve design, and the flexible breathing tube is easy to breathe and drain. The diving mask is made of tempered glass lenses, which can prevent strong ultraviolet rays. The surface of the lenses has undergone special anti fog treatment. Clear lenses and panoramic view: This mask features single-layer tempered glass lenses designed specifically for snorkeling, swimming, and scuba diving. The skirt is made of soft, hypoallergenic, transparent silicone, with single lenses providing ultra-high visibility and an unusual frame shape extending in all directions. Silicone material: The scuba diving mask is made of soft, transparent or food grade silicone, which is very comfortable. The skirt made of environment-friendly materials will not make your face allergic. It is easy to clean after use. It is especially suitable for long-term use in freediving and will not feel uncomfortable. Easy to use, suitable for most people: The mask has an adjustable belt, easy to operate, suitable for a variety of face types, light weight, and is an ideal choice for freediving.