Single lens and adjustable temples ensure reliable performance. Lenses are coated for superior scratch resistance. Lenses provide 99% protection from harmful UV rays. Exceeds ANSI Z87.1-2003 High Impact requirements and CSA Z94.3 standards. Gray is commonly used in outdoor applications. Offers protection from excessive glare and high levels of harmful UV-A and UV-B rays.  Sold per dozen. Priced per pair. Enter quantities of 12, 24, 36, etc. Price discounts based on quantities ordered.