1) certified by BV company 2) CE, EN71, Rohs 3) ABS plastic frame 4) TAC lens 1)Material: Top grade plastic frame,optical resin lens Higher stability,good causticity,anti-abrasion2)Lens material: Imported 0.22-0.26mm polarized lens 3)Optical parameter: Polarized efficiency 99.99%,single transmittance above 42%4)Physics Parameter: Legs can anti-bending,anti-high temperature 110 degree,anti-cold - ...