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. 100% protection is provided as well.