This extra large lens cleaning cloth will scratch the anti-reflective coating and/or all polycarbonate lenses. I wash my glasses under hot running water with a little detergent and dry them (clean) with this cloth. My lenses are so covered with small scratches from the fabric that I had to order new lenses. The lenses were brand new when I first started using these fabrics. The best business plan would be to make a fabric of this size and then test it on the most common eyewear material (polycarbonate) until you get a product that will get the job done without damage.
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