I bought 5 pair from an Amazon vendor and later got the email saying that they may not be safe to wear. Amazon returned my money. The glasses are stamped with the proper ISO rating, so I'm thinking maybe they are ok. Put them on and stared at a bright incandescent light bulb and could see nothing. So, tried looking at the noon day sun and could see a small orangey ball. It actually seemed darker than my sextant sun lens. They should be fine for the eclipse, which I am lucky to add, will be 2 minutes and 21 seconds of totality over our little cabin in NC.