Hi,, Is the lens tenpered, glass or plastic ? Thanks Mike
RAFAEL T Hi Mike, it's tempered glass.
MICHAEL H The lens is tempered, the corner where the two pieces of glass come together is joined with some type of high tech adhesive that is close to optically perfect. It is a great mask with an exceptionally wide field of view, i would recommend it for snorkeling/freediving at depths to 50 feet. One issue is that the lens is close to the face, it is a flat mask that does not fit everyone well.