
The price (for a pack of 10) seems like a mistake so I keep buying them for students in the lab. One of their great features when used with students is that the elastic is permanently attached at both ends, meaning it cannot detach from the glasses. That said, they're not regulated, but for my situation (with students) it's a feature, not a problem. (My biggest problem with most glasses is that students can't pull the strap out and not figure out how to fix it.) They weren't the most comfortable for me, but they were bearable. So far none of the students have complained about the comfort. Surprisingly, they didn't seem to heavily fog the students (even when wearing masks). They're relatively new, so I'll update them if there are any major changes.

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