AIRFLARE

Spirometers; Medical respiratory apparatus for improving the strength of a user's inspiratory and expiratory muscles; medical apparatus for strenuously exercising the breathing muscles in order to improve their performance; Lung exercising device, namely, an apparatus for therapeutic purposes intended to aid persons in the development of contractile strength for their lungs, to increase the strength of exhalation, and to provide an isometric-isotonic type of exercise for the user's lungs