This model is approved according to ANSI and it’s also approved by the military fragment test (MIL-PRF-31013). The MIL Test contains all kinds of tests with fragments, in all sizes, at both high and low speed – shot against the lenses in the goggles. This test is demanded as approval for work use in the military and the armed forces all over the world. The ANSI approval which all of the Wiley X glasses is approved for, show that Wiley X not only makes nice design sunglasses, but includes the safety in the models. ANSI is the US test, which is compatible to the European EN.166 test. Which allows you to use your Wiley X sunglasses as safety glasses. This lense comes with a mirror on them.