This is the XS Scuba Oceanways SuperView-HD Scuba Diving Mask Features: SeaSharp High Definition Lens Sharpens underwater viewing Reduces distortion by defining faint edges Filters out UV and glare Changes white light harshness to a calming blue light for less eye strain Plastic box with lid included Seadive/Oceanways has developed and field-tested, anti-reflective (ARC) mask coatings of tempered glass. Seadive/Oceanways&'; ARC coatings now allow almost 100% transmission of light. Standard tempered glass has a minimum of 4%-plus rate of reflection which can seriously distort underwater vision.