Package Content: You will receive a piece of lung exerciser device, which can train your abdominal and respiratory muscle, increase your lung capacity, and reducing shortness of breath.
Premium Material: Our lung trainer is made of premium silicone and ABS, reliable and lightweight and not easy to break, you can use it with a confidence.
Practical Design: The lung capacity exerciser is aim to reduce the amount of air flowing to your lungs, forcing you to take more deeper breaths, thereby increasing your lung capacity. Almost anyone can use it without side effects.
Easy to Use: Our product is easy to use. Turn the valve to "+" to increase resistance and to "-" to decrease resistance. Great for athletes or anyone who needs more lung capacity.
Easy to Carry: The breathing trainer is easy to carry. It can be taken when you go out, it doesn't take too much space. Convenient for you to use anytime and anywhere.