【Exercise vital capacity】: This trainer can blow and breathe for exercise and measurement, which helps increase lung ventilation.(Random color balls)
【Flexibility】: The tube has good bending resistance, does not affect the patient’s posture, is easy to clean, and is durable. It is made of high-quality materials and has a longer service life.
【Design】: Convenient dual card connector design, tightly connected, not easy to fall off. Suitable for people recovering from surgery, cough, lung discomfort, cold and sub-healthy breathing.