All JT Spectra Prizm Thermal Lenses are treated with a super scratch-resistant silicone hard coat. JT's special silicone formula is three times stronger than the industry standard and offers more protection than any other lens on the market, in simple terms it's built to last.These lenses are used in the JT Proshield, Proflex & Premise Goggle Systems as well as the Tippmann Tactical Airsoft GoggleJT Spectra Paintball Goggle Prizm 2.0 Thermal Replacement Lens Features: x Mirrored Colored Lens for increased environmental adaptability x Approved ASTM standard for eye protection x Spectra 260Degrees field of vision x Fits all JT Spectra Goggle Systems including Proflex, Flex-8 and Proshield x Maximum Anti-Fog performance