Medical protective goggles class I medical protection, anti fog, anti dust, anti shock. Commonly called chemical splash goggles, contain indirect vents to restrict the influx of liquids and an elastic headband. The goggles seal off your eyes from splashes and falling debris common to painting, demolition and asbestos removal projects. They contain scratch resistant 100 percent polycarbonate lenses inserted into a PVC frame. The lenses provide 99 percent protection from UV-A and UV-B rays which is a benefit if you are working outside painting houses or sanding fiberglass. The Pyramex G204 Goggles were previously called the SG204 Goggles. Meets ANSI Z87.1 standards.