Pros from Reviews
- Good quality
- Portable size
- Easy to use
- Strengthens diaphragm
- Adjustable exhalation
- Effective for training
- Comes with case
- Easy to clean
Cons from Reviews
- Ineffective for some
- Too easy at max setting
Notable Features
Adjustable Resistance
Comfortable Fit
Durable Material
Improves Endurance
![Portable Breathing Trainer, [New Upgraded] Adjustable Muscle Trainer with Soft Silicone for Strengthen Breathing Exercise, Compact Oxy-fit Breathe Trainer for Fitness & Training, Black](https://m.media-amazon.com/images/I/61ntx+j87wL._AC_SX679_.jpg)