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The Nerdwax FogBlock is a reusable coated microfiber cloth that keeps your lenses fog free.
Simply breathe on your lenses to fog them, then wipe evenly with cloth... boom! You are now UnFogettable.
Safe to use on all types of lenses and coatings including AR coatings*.
Stays effective for 1 year or 300 applications when kept in pouch.
Does not contain PFA's, CMIT or MIT.
* we've heard from some users that it does not work as well on Crizal lenses
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