180 Panoramic and Anti-Fog LensesSingle lens design of snorkeling mask allows you to enjoy a wide unobstructed sea view while snorkeling, scuba diving and swimming. Thickened tempered glass with the latest anti-fog treatment means you'll have a crystal clear underwater experience without blurring or distortion. Waterproof Seal, Perfect Fit to the FaceSwimming mask skirt is designed with soft and flexible silicone, which provides a waterproof seal to the face. The unique ergonomic nose pockets cover your nose well, making the diving mask fit perfectly to different face shapes, so that the goggles won't slip due to the water. It ensures that children have such wonderful fun in the underwater world. SAFE AND DURABLE TEMPERED GLASS LENSKids swimming mask with shatter-proof glass lenses can protect against deep water pressure of various diving or swimming. Scratch-resistant lenses instead of polycarbonate give you a clearer view underwater with virtually no scratches on the lenses. Giving you a safer swimming and diving experience. Soft Nose MaskThis kids swimming goggles comes with a soft silicone nose mask to compensate for the increased pressure when your child is swimming, snorkeling or diving. Also helpful for kids who don't know how to stop breathing through their nose underwater. Great for snorkeling and recreational swimming. Food Grade Non-Toxic MaterialThe skirts of children's diving masks and nasal masks are made of food grade silicone and have no odor. This swimming mask will not make the child feel uncomfortable and painful. It is durable, easy to clean and especially suitable for long-term use. EASY ADJUSTABLE HEAD STRAPThe straps of the swimming mask are easily adjusted by pressing the button buckle of this kids diving mask easily, after adjustment, the straps are firmly fixed in place and won't crawl in the water. Suitable for the face shape of children aged 4-16. Great for snorkeling, diving, swimming training and more. Great gift for kids, teens, teens and teens.