Mainly overcome the problems of big air intaking resistance, difficulties in breathing and so on. This system use the air pump to transport the air to the mask. You could fix the air pump on your waist, so you are more close to the air source. The canister comes with the unit can filters a variety of harmful gas.Fine workmanship and good performance. 1 x Full Face Mask. Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same. The item "Electric Constant Flow Supplied Air Fed Full Face Gas Mask Respirator System HOT" is in sale since Monday, February 25, 2019. This item is in the category "Business & Industrial\Facility Maintenance & Safety\Personal Protective Equipment (PPE)\Masks & Respirators\Mask Replacement Cartridges". The seller is "besttool2019" and is located in Guangzhou. This item can be shipped to United States, all countries in Europe, all countries in continental Asia, Canada, Mexico, Brazil, Australia.