Review (5/5): Great cloths
I looked everywhere for a high-quality optical cloth to use on my glasses. Sure, there were plenty, but none was over 3" x 5". These, however, are a hefty weight and large, making it easy to clean your lenses. They wash up well. I wash them in warm water with the white clothes and they hold up to chlorine bleach. Don't forget that you can't use fabric softener on them or you'll just smear oil on your glasses. They were well worth the money.