[RAJAH235]

FWIW.
I have 4 pairs of these 'types' of 'Solar Eclipse Shades', from 2 different manufacturers.
They all work perfectly well. No problems at all.
The only thing I recommend is, do not just rely on them staying on your head, as any breeze may dislodge them. Hold them on.
One member of our club imported them from the U.S. especially for the Ceduna total eclipse.
I cannot say how many pairs he sold but there were no reports of anyone being 'blinded' from using them either before or after that event.
They do inhibit the visible/infared/ultraviolet light to the %age specified, exactly as stated & as such, are perfectly safe to use.
I cut a pair in half to use on my binoculars for the Venus transit & to show visitors the sun whilst waiting for Comet McNaught in January 07.
No-one complained about any discomfort or 'going blind'.
I repeat......'They are perfectly safe if used correctly'.
Bintel would not sell them, otherwise.
Ta muchly.
Regards, L..

ps. I often get them out when sailing to let our Radio Yachting members & other interested parties, have a look through the pair that are always in my car. Again, No problems.