Crafted from high grade polycarbonate, machined from virgin materials and formed to shape.  Align the angle of the lens to the proper position for your work application with ratcheting lens pitch adjustment.  Adjustable nose pad conforms to a broad range of bridge sizes.  Provides 99% UV protection.  Lens/frame design allows air to flow freely up and away from lens to prevent fogging.  Temples adjust to four different lengths.  Clip and tension mounted 9.5 base curved lens eliminates screws or rivets for quick and easy lens replacement.  Exceeds ANSI Z87.1 - 2003 High Impact requirements.  The infinity blue anti-fog lens is commonly used in indoor applications where there is an excessive amount of yellow or sodium vapor light.  Offers a high level of contrast.  Sold per dozen. Priced per pair. Enter quantities of 12, 24, 36, etc. Price discounts based on quantities ordered.