EcoAir is a line of compressed air-powered, water-based spray can corrosion protection products. The cans are powered by compressed air and are a bio-based replacement for chemical propellants. A four-layer EcoPouch is inserted into a can, which then is pressurized. The pouch then is filled with the liquid. As the valve is depressed, the surrounding pressure expels the bag’s internal fluids until the product is used up.