✅ The pack contains 2 different size balls. 1x Average Lung (Medium size) and 1x Low Lung (Small size).
✅ Balls are used as replacement or spares for convenient continued use and, for those that wish to adjust the resistance of their AirPhysio device.
Why purchase additional resistant ball bearings for your AirPhysio device?
1) Some people accidentally misplace the ball that comes inside the AirPhysio device and need an additional ball as a replacement part, instead of purchasing an entirely new device.
2) Some people like to use a different resistance for their lung training and or mucus clearance.
The AirPhysio Children/ Low Lung Device contains a Small size ball as standard.
The AirPhysio Average Lung Device contains a Medium size ball as standard.
The AirPhysio Sports device contains a Large size ball as standard.