The NIOSH-certified Millennium CBRN Gas Mask is a full-facepiece air-purifying respirator (APR) that protects first responders against chemical, biological, radiological and nuclear (CBRN) agents. This mask incorporates a flexible, one-piece polyurethane lens with a wide field of vision bonded to a durable Hycar rubber facepiece. A drinking tube provides connection for hydration. The Millennium dual-canister mount allows for weapon sighting from either shoulder. The mask's fully elastic six-point head harness makes it esy to don, adjust and remove. An internal nosecup prevents lens fogging by deflecting air from the lens.