Creative Full vision Panorama Nova Mask made of superior quality no -aging chemical resistant rubber face piece with double reflex sealing flaps, 5 point headband, Panoramic replaceable visor speech diaphragm , self demisting facility with inhalation and exhalation valves with flexible corrugated tube carrying strap and Canister for protection against toxic and poisonous gases and vapours (except HCN, CO , NO2 , NO3 and Nitrous fumes.) upto a concentration of 10,000 PPM provided a minimum concentration 17% Oxygen is present in the atmosphere.