Glass lenses are the most scratch resistant lens material in the world

otis glass lenses don't scratch

OTIS' mineral glass lenses are not only lightweight and optically correct, but the glass in itself is derived from natural resources like Soda ash and sand. 

Having a lens made from renewable, natural resources like glass makes the ever crisp vision you get with OTIS eyewear that much sweeter.

Scratch resistant  x distortion free x and permanent tinting