Tri-Tested PolyCarb UV 400 Lens The Radius Goggle lens replacement keeps your eyes safe with an impregnated UV400 protection and durability that goes beyon the industy standard of two tests by passing three unique tests (EN174 2001, ANSI Z87.1 and ASTM F659). FOGTECH HD Antio-Fog: Nothing ruins a ride faster than a fogged lens. We have sourced the best materials and methods to bring you the best in Anti-Fog possible with current technology. The FOGTECH HD formula is designed to manage extreme temperature differences and keep in vision in full HD. And with the FOGTECH HD and A.F.I tag-team working together, nothing gets in your way.