These are quality laser safety goggles manufactured in Michigan, US.
The level of protection is based on the optical density factor:
190 - 430nm: OD 5+
525 - 532nm: OD 1.5+
632 - 659nm: OD 1.4+
640 - 650nm: OD 2.5+
CE-certified LaserShields meet the US and international laser safety standards, including ANSI Z136.1, EN207 | EN208 | EN60825 and Z87.1.