Nerdwax FogBlock is a reusable coated microfiber eyeglass cleaning cloth that helps prevent your glasses from fogging. From the makers of the original glasses wax, FogBlock keeps your glasses clear and free from fog all day. Stays effective for 1 year or 300 applications.

1 FogBlock microfiber cloth per box

1. Dampen the FogBlock microfiber cloth
2. Apply gently to the inside and outside of your glasses or sunglass lenses
3. Gently remove any excess moisture with the dry part of the cloth

Repeat throughout the day if necessary