Long Breath Life (Blowback for Health and Beauty Training) Level 0 Set, 3 pieces, 1 box (3 pieces)

You can choose from three levels of blowing power to suit the user's breathing function. Quantity: 1 box (3 pieces) Size: 90 x 80 x 150 mm Guideline for exhalation force: About the same as wiping a piece of tissue and shaking it Accessories: Training method manual