World’s First. Transparent plastic fire extinguisher. The name CALMIE comes from “Light” and “Transparent”. Light and easy to operate, the transparent body enables the contents to be checked. This is not possible with conventional designs. Additional design features enable ease of use, such as the softly curved handle, large easy to pull safety pin, and non-slip hose grip that aids an inexperienced user to hold the device correctly. Compared with a conventional metal extinguisher the weight of the cylinder is less than 50%. The material for the cylinder is PEN, a high grade plastic with excellent strength and gas barrier characteristics.