Children's design The size is XS and only worn for children, super comfortable and fit and never bad smells like cheap masks do. Simple breathing: snorkel face mask guide harassment to keep a snorkel in mouth wide, it allows you natural breathing. No breakage gagged by the timeless design mouthpiece. Anti - fog: An innovative design with the separate breathing chamber generates a high - power - field airflow away helps prevent fogging and allow you to dive longer. Full Face Mask Style: sealed with super large mask shatterproof windows provides 180 - degree - underwater visibility. So you see super comfortable, stunning views more fish and seafood than ever. GoPro Monday: With built-in camera mount easily mounted on a GoPro camera; Ideal for snorkeling, swimming, snorkeling and other underwater activities.