Uvex S3520X-ADV Genesis X2 Safety Eyewear, Black Adv TPE Frame, Clear UV Extreme Anti-Fog Lens Three position rachet lens inclination adjusts to complete the fitting system and provides unsurpassed extended wear comfort Soft flexible nose fingers conform to fit a variety of nasal profiles A unique ventilation channel between the frame and lens vents the eye socket area to deliver an outstanding level of moisture and fog control Economical and easy lens replacement system allows for multiple lens tints and extends the life of the eyewear Meets ANSI Z87+ and CSA Z94.3 standards and military Vo ballistic impact test (7 times higher than ANSI requirements)