Abdominal Breathing Exerciser Respirator

About the product1. Adopt scientific ergonomic design. Compact, healthy, convenient, safe and without side effects. 2. Can be used on the face and abdomen. 3. 3 breathing modes can be adjusted: the outer side is weaker than 1 hole, the medium is weaker than 2 holes, and the outer side is stronger than 3 holes. 4. The props adjust the air intake according to their front-end state. After use, rinse with water. 5. Props will be included in your mouth, inhale and exhale, and let the abdomen swell and sag, each 30 degrees backward (about 5 minutes). 6. Resistance can be easily adjusted to suit different levels of lung health. 7. Reduce breathing difficulties and increase lung capacity by exercising breathing muscles.