Body tinted to reduce glare. Special one-way vent allows air to enter while keeping liquids out. Generously sized heavy duty body and lens. Fits over most prescription eyewear. Dielectric. Passes D3: Droplet and Splash Test. Passes D4: Dust Test. STANDARDS & CERTIFICATIONS ANSI/ISEA Z87.1 + High Impact CAN/CSA Z94.3 CE/UKCA EN 166