Anti fog coatings and ventilation systems, anti scratch and easy clean are all features that enhance your vision. Cat frames are ergonomically designed to flex-fit your facial shape and can be individually adjusted. Cat safety glasses are engineered to the core for total comfort. Free cat protective case included. Polycarbonate lens material tested at velocity to shield from impact. 3 lens angle adjustments with snap-lock ratchet mechanism. Upper and lower eye protection, vented for air flow and fog resistance coating, hard coated both sides for resistance to scratching. 99.9% UV protection. Flex temples with integrated cushioning system. Neck cord attachment. Soft touch vented nose piece for comfort. Meets ANSI Z87.1 2003 standards for High Impact protective eyewear.