silicone✔【ANTI-FOG AND 180°PANORAMIC VIEW】Enjoy maximum under-water visibility. Advanced lens shape design and tempered glass with anti-fog treatment means you'll have a crystal clear underwater experience, user friendly for kids, no worry about fog. One piece glass design enables better and wider vision under water✔【NO LEAKING】Our kids snorkel mask push button buckle for easy strap adjustments, fit a range of 6-15 years old children' faces. The diving mask's skirt is designed with soft and flexible silicone, creates a watertight seal with the diver's face. Comfortable and no leak✔【TOP DRY SNORKEL WITH SPLASH GUARD and PURGE VALVE】Our kid snorkeling set has advanced anti-splash system, which can prevents water from entering the snorkel and the purge valve allows for easy clearing and draining water out of the snorkel✔【FOOD GRADE SAFE MATERIAL】The skirts of youth snorkel set and its mouthpiece are made of food grade silicone without odorous smell. This child snorkel gear will not make kid's face allergic, uncomfortable and painful. It is durable and easy to clean and especially suitable for long-term usage✔【WHAT YOU GET】Scuba mask and snorkel set for kids includes one mesh bag. WORRY-FREE AFTER SALE, Have a question? Need a replacement? Feel free to contact us and we are committed to ensuring you are satisfied. So, enjoy exploring the unknow underwater!