Obviously I don't know how these glasses will work until they are used to see a solar eclipse. However, after purchasing several styles of goggles from different vendors, I was very impressed with this Rainbow Symphony item. According to the NASA website re. "Safety Total Solar Eclipse 2017" Rainbow Symphony is among the few listed manufacturers "to have certified that their Eclipse goggles and handheld solar monitors comply with the ISO 12312-2 international standard for such products." Goggles in a fabric case, on a cord ; The kit also includes 2 disposable "Shades of Eclipse" (cardboard frames). They are all packaged in a package labeled "ECLIPSE SHADES Plastic Designer Frames Solar Eclipse Safety Glasses" "Safely View Solar Eclipses, Planetary Transits, Sunspots and Other Solar Phenomena". There is a directive and a warning: NEVER LOOK AT THE SUN WITHOUT SPECIAL EYE PROTECTION. DO NOT USE IF DAMAGED. "Made in the USA by Rainbow Symphony Conclusion: DEAR MANUFACTURER, MADE IN THE USA, GOOD VALUE = HIGHLY RECOMMENDED.
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