Stops Fog from Forming on Glass when wearing your face mask! Simply Rub Lenses with the Reusable Anti-Fog Treatment Cloth! PREVENT FOGGING ON ALL TYPES OF EYEWEAR LONG LASTING PROTECTIVE COATING FOR SAFETY ENJOY OUTDOOR ACTIVITIES WITH CLEAR VISION ENHANCE YOUR SAFETY AND AVOID ACCIDENTS INNOVATIVE AND CUTTING-EDGE TECHNOLOGY CLOTH LASTS UP TO 600 WIPES OR 6 MONTHS TREATMENT ANTI-BROUILLARD NANO No Harmful Chemicals and Meets Strict REACH Standards! No need to worry about toxic chemicals in our product! It's been through rigorous testing and is validated by REACH as being compliant with all of their strict guidelines. In this package, you'll receive a micro-fiber cloth that's been treated with our proprietary solution. It's a powerful anti-dote against annoying and hazardous fog.