Anti-scratch and anti-mist lens to EN166 “K” & “N” rating, field of use: 3 4 9. The originality of the Keep Safe 6X3 model is expressed in the design of the facial support that ensures a proper seating of respiratory masks and half masks and for the use of additional facial protection that provides total protection to the operator’s face. Panoramic lens can be perfectly worn over prescription glasses Exclusive UDC coating Facial support compatible with half masks Additional facial protection Indirect ventilation system assures certified protection against drops and splashes Category III° PPE Impact resistance at 432 km/h, even at extreme temperatures