This is the IST Pro Ear 2000 KIDS Youth Scuba Diving and Snorkel Mask Features: Prevents pressure induced ear ache Enhanced underwater hearing and sense of direction Stops dirty / polluted water from entering the ear causing infection Kids Choice for sensitive ears! Enhances underwater hearing & sense of direction Optional corrective lens feature Increases warmth around the ear The IST ProEar Mask is manufactured to the highest standard and only the best available materials are used. It is designed to counter the most of the unavoidable effects pressure and water have on the ears so you can have more enjoyment underwater. The skirt is made from the best grade of crystal clear, hypoallergenic silicone, the skirt is soft and automatically conforms to a wide range of facial profiles. The strap is mounted on swivel buckles, the silicone strap with its large contact surface secures the mask to the wearer. With one-way valve placed inside each equalization tube, air is allowed to travel from the mask to the ear covers for pressure equalization and water clearance while stopping water from flooding the mask in the unlikely event of flooded ear covers. *Note, the ear covers are the same size of the adult ear covers.