Anti-Fog Lenses Frameless Design Floats in Water The Shield III sunglasses offer a frameless construction making them lightweight and providing excellent peripheral vision. The lenses themselves are precision crafted of impact resistant polycarbonate and exceed the ANSI Z87+ standards for high-mass and high-velocity impact protection. This eyewear wraps around the face and has closed cell memory foam to minimize wind disruption and turbulence. Shield III lenses are anti-fog coated to ensure visual clarity.table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }