These impact-resistant safety glasses are tested to ANSI Z87. DELLENGER-AF Clear Lens Matte Black Anti-Fog Safety Glasses Adjustable Temples ANSI Z87.1 is the US standard for Personal Eye and Face Protection Devices and is listed on the frame. The Skullerz DELLENGER Anti-Fog Safety Glasses feature adjustable temples that shift up or down and lock into place for a custom fit on a variety of face sizes.