Solar Eclipse Viewers (Pack of 25) CE & ISO Certified

I've used Thousand Oak solar viewers for nearly 30 years. I have some of these I bought in 98 and they are as good as new, despite the low price. Bought more for a family reunion on Aug 21st

I'm sure these were perfect, but Amazon recalled them, and so even though I felt they were safe after contacting Thousand Oaks Optical and Shyh, I felt disinclined to use them. I rate the glasses a 5 and Amazon 0.

For the price, I was expecting a more substantial product. The viewer is made with a very thin cardboard material. The cardboard is OK, but should be a heavier stock. The width of the viewing area should be a bit wider. It seems to be sized for children or small adults. However, the view does work.

Worked Ok for Eclipse 2017