Made of grilamid tr 90 a homopolyamide nylon characterized by an extremely high alternative bending strength low density and high resistance to chemical and uv damagehydrophilic rubber ear and nose pieces for a no slip fitadjustable ear and nose pieces for a customizable comfortable fitlight night759 277 light transmissionour widest transmission rangeclear to smoke transition provides clarity comfort and protection from dawn to dusk100 protection against harmful uvauvb rays