Tempered glass is two to five times more durable than traditional glass. It is more scratch resistant than a polycarbonate lens. In case of a major shock, it breaks into small pieces, reducing the risk of a major accident. For the safety of children, size S is of polycarbonate.
Mask certified compliant with safety requirements according to European EN 16805 standard. 2015. Certified by the INPP (French professional diving institute).