General purpose is for indoor applications that require impact protection. Cylinder lens is coated to prevent Fogging. Optically correct polycarbonate lens that offers protection from excessive glare and provides 99% protection from harmful UV-A and UV-B rays. capstone goggle incorporated with removable shield provides full face protection. The shield with ratchet allows user to open or close in 3 positions for adjustment; 4 ventilation holes provide appropriate airflow. The polycaronate shield conforms to the face offering increased impact and dust protection. Indirect-vent frame provides protection against splash and dust. Soft vinyl goggle body conforms to facial contours for a very comfortable fit. High Impact resistance against flying particles Fits over prescription glasses Fully adjustable elastic band Includes 2 disposable tear off visors, which can be replaced as they become dirty or scratched. A pack of 6 clear disposable tear-off visors, are also available to purchase separately. (VPACK6) Exceeds ANSI Z87.1 High Impact Requirements, Exceeds CAN/CSA Z94.3-07 Standards Sold by each. GG504TSHIELD