Standard: En 166 Lens:Polycarbonate, Cleartechnology: 2C 1,2 (Crown = Brand Name) 1 Ft Ceframe:Polycarbonate / Tpr, Frameless, Black / Redtechnology: (Crown = Brand Name) En 166 Ft Ce Lens With Optical Correction In Various Diopters: Diopter + 1,5 = Item BOLLE IRIS Corrective And Safety Glasses