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. 5.0 IR filter is commonly used around welding sites or for medium to heavy cutting and medium to heavy gas welding.  Sold per dozen. Priced per pair. Enter quantities of 12, 24, 36, etc. Price discount based on quantities ordered.