ESS Innerzone Series Goggles are NFPA 1971-2000, NFPA 1500, and ANSI Z87.1 compliant, and have exclusive tech features designed specifically for use on structural firefighting helmets. Fully ventilated frame with buffered airflow for powerful fog resistance and high filtration of airborne particles and smoke. 2.4 mm thick, high impact polycarbonate lenses with high quality anti-scratch and anti-fog coatings. ESS Instant Fit Speed Clips High temperature-resistant frame and strap materials. Anatomical face fit that accommodates most eyeglasses. Tear-off lens cover compatibility. 100% UVA/UVB protection. Snap-on/snap-off strap system with X-tricator mounting brackets. The easiest NFPA goggle to deploy or remove-it can be used alone or together with a face shield.