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Increase lung capacity for strong lungs
If you do any sort of exercise or sports, a healthy set of lungs is essential for optimal performance. This simple yet effective system offers ways to increase lung capacity and works by restricting the flow of oxygen using varied size mouthpieces. Gradually reduce the amount of airflow with the 10 different size caps until your lungs are strong as steel.
- 10 different size caps for training
- 4 different size caps for breathing exercises
- Easily adjustable to various lung-fitness levels.
- Compact, convenient, safe for you, and for the environment.
- Soft and fully biodegradable silicon.