The breath meter provides an easy way to control the inhaler appliance, it will help to count the cats breaths amount while the indicator movement signals that the mask is tight enough to the cats face.
Besides the spacer provides an exhalation control system, two valves which the carbon dioxide is released through during exhalation. It prevents exhalation from entering the medicine tank.
2 size masks made of PVС with a diameter of 1.26 inches and 1.65 inches are included in the set with Sniff Up spacer. This provides you to adjust the mask so that it covers the cats mouth and nose, but not the eyes.
Fits all cats