Protection that you can see! Our Wiley X GUARD ADVANCED is one of the lowest profile frames in our changeable lens series. WX GUARD ADVANCED meets the MIL-PRF-32432(GL) ballistic safety standards for impacts and optical quality. We are constantly improving our products, but with the WX GUARD ADVANCED, we took an already solid pair of glasses and made a few tweaks to make them even better. At a lower price point, these glasses will keep you protected without breaking the bank. Style. Comfort. Value. What else could you ask for?