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 damage hydrophilic rubber ear and nose pieces for a no slip fit adjustable ear and nose pieces for a customizable comfortable fitweight 27gfit s lframe type framelessrx options rxo3 adaptorhydrophilicadjustable ear padstr90adjustable nose padbag case includedincluded lenses smoke ac red clear