The Pyramex Capstone Anti-Fog Safety Goggles offer a versatile, adjustable, and incredibly comfortable general purpose eye protection. The GG504T Goggles offer terrific impact protection as well as chemical resistance. Made of 100 percent polycarbonate, the lenses are scratch resistant and the cylinder lens is coated to prevent fogging. The Capstone Goggles exceed all ANSI Z87.1 2003 High Impact requirements as well as OSHA safety glasses requirements. They also meet CAN/CSA Z94.3-02. The Pyramex GG504T Goggles include removable vent caps that the user can remove or seal, depending on the ventilation needed. It has an adjustable quick-release elastic band and a soft PVC body that conforms to facial contours for a comfortable, universal fit. The GG504T Goggles will also fit over your prescription eyewear.