Meets ANSI Z87.1 Safety Rating for Impact Resistance 4SHADOW lens technology High-Resolution Lenses KaiwallBio-based TR90 Frame Material WarBirds Enfilade eyewear features our 4shadow lenses and Kaiwal frames. See the world through crystal clear high resolution, polarized and ANSI rated impact restistant lenses. The Kaiwal frames are made from super rugged bio-based TR90 material that is sure to impress.table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; } Frame Color: Tortoise Matte Lens Color: Brown Stockable: Y Country Of Origin: TW