About This

• Nerdwax FogBlock is a reusable coated microfiber cloth that keeps your lenses fog free
• Dampen lenses and wipe evenly for about 5-10 seconds for each lens.
• Stays effective for 1 year or 300 applications when kept in pouch!
• Safe to use on all types of lenses and coatings!
• If wearing a mask, make sure it fits properly, limiting big gaps at the top of the mask.