4SHADOWlens technology High-Contrast lenses KaiwallBio-based TR90 Frame Material The WarBird Easy Day tones things back just a touch with classic styling, while also providing all the benefits of our WarBird technology. While the lenses still offer impact protection, these frames do not qualify for Z87.1 due to the reduced side coverage, so we recommend reserving these for your easy days.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