Breathing Bags are collapsible reservoirs through which gases are inhaled and exhaled into during anesthesia and artificial ventilation. These bags contain breathing gas i.e. oxygen and recycled exhaled gas. Furthermore, this recycling reduces the volume of breathing gas used. Breathing Bags are available in a variety of colors ranging from black, blue to green in the market. Also, these are manufactured in different sizes such as 0.05, 0.50, 1.00, 1.50, 2.00, 3.00, 4.00, 5.00 & 6.00 ltrs. The Breather technology is used in many environments like underwater, mine rescue, outer space, mountaineering, submarines, hospitals, and more. One of the main advantages of the breather bags over other breathing equipments is the breather's economical use of gas.