... 4,Anti-fog,anti-scratch treatment 5,for medical us Product NameSafety glasses,safety goggle, ... ventilated design ,wear more safety4. Elastic rope fit for all people5. Scratch and impact resistant Polycarbonate Lenses6. ... choice)7. Anti-Fog coated lenses for chemical & medical purposes8. Different color lense for different purposesa) Grey : Outdoor . ... and ANSI Z87.1. Safety goggle for chemical splashing