Standard Pack = 1 piece(s). A Hycar version of the military-style gas mask, these masks were used by the US Air Force in Desert Storm. They combine performance, fit, comfort, and cost efficiency in one indispensable package. Their flexible, one-piece polyurethane lenses have Wide fields of vision and are bonded to Hycar-rubber facepieces. Plus internal Nose cups reduce fogging, while elastic 6-point head harnesses allow for easy on/off and adjustment. Mechanical speaking diaphragms are also included. The CBRN canister contains chemical sorbents and a P100 filter. NIOSH approved. Canisters sold separately. Model Number: 10051287, 10051288, 10046570