https://www.gstc.com/product/lung-exerciser/

Buy Lung Breathing Exerciser - 3 Ball Respiratory | GSTC.com
www.gstc.com

Buy Lung Breathing Exerciser - 3 Ball Respiratory | GSTC.com

Lung Exerciser is a breathing exerciser. Specially designed with 3 chambers to deep breathing exercises and improves overall lung function to patient health