SG-58C-AF Helium 15 Clear Anti-Fog Polycarbonate Lens withErgoFit Clear Plastic Temples, Safety Glasses is a greatsolution when you don't want to wear heavy eyewearprotection. Weighs only 15 grams and maintains Class 1optics! Meets ANSI Z87.1 standards. Distortion-freewraparound polycarbonate lens, superior peripheral visionand protection. Temples securely holds the frame in placefor better non-slip compliance. Fits well with hearingprotectors and other PPE. Polycarbonate lenses absorbs99.9% of harmful UV A, B and C, 180-380nm. Meets ANSIZ87.1-2010+.