Integrals glasses, PVC frame and lenses in acetate, with treatment for anti scratch, anti fog, chemical risk and radiation. High resistance to the impact of high speed particles and average power and extreme temperatures. Double vent (direct and indirect). Compatible with most of the correction glasses. Special nasal bridge, compatible with masks. Is perfect for operation that involves risk of projections (solid oer liquid), as well as dust. Special for Excellent optical quality. EN170(2C-1.2)