Meets both ANSI Z87.1 and CSA Z94.3 standards, Glasses provide 99.9% UVA and UVB protection, Polycarbonate unilens visitor’s spectacle that can be used alone as a pair of safety glasses, or as an Over-The-Glass for today’s smaller personal eyewear, Features a molded nose bridge to fit the vast majority of users and indirect vent temples to reduced fogging,