The Z4000 is a clear framed spectacle with an Anti-Mist HC Lens. An exceptionally lightweight sports style safety spectacle, with a wraparound Polycarbonate lens with UV protection and an integrated nose-bridge. The Z4000 includes a simple to attach/detach spectacle cord for convenience and prevention of misplacement. Performance - Lens and frame offer protection against low energy high-speed particles at 45m/s (101mph), The optical qualities of the lens comply with the requirements of optical class 1 (highest), Anti Scratch and Anti Mist Lens, Lens also offers 99.9% UV protection, EN 166.1.F & EN 170. Tested to resist the impact of a 6mm (¼”) steel ball fired at 100mph (160kph) at the lens.