Natural Lung Exerciser & Mucus Removal Device - Naturally Clear Mucus from Airways & Improve Lung Capacity with This OPEP Respiratory Breathing Exercise Device - Made in Australia – WhiteCLEAR AIRWAYS WITH VIBRATORY PEP THERAPY: This portable lung exerciser device sends vibrations through the airways, which effectively loosens stubborn mucus build up from airway walls; Youre then easily able to clear the mucus from your system when you cough DESIGNED TO HELP TRAIN LUNGS: Our mucus clearing device can be used as a lung strengthener; With regular, long term use, the breathing trainer can help improve the strength of your lungs and