1、Strengthen Muscles: Utilized to enhance the resilience, persistence, and reduction of breathlessness of respiratory muscles, fortify your respiratory muscles, and allow you to breathe with greater ease. 2、Good For Health: A device for expanding lung exercise can mitigate breathing difficulties, alleviate dyspnea, enhance athletic performance, expedite recuperation, and elevate comprehensive health and energy. 3、Simple Operation: Used for respiratory exercises anytime and anywhere, and it is suitable for people of all ages. Most individuals only need to utilize it once or twice a day, and for 1 to 5 minutes each time only. 4、With hole adjustment: The resistance of the expander can be regulated by adjusting your breathing and inhalation, and the breathing tool can be customized according to your individual needs. 5、Perfect For Smoker: Significantly enhance lung function, and it is effective in preventing respiratory illnesses. It is especially useful for the elderly, smokers, and individuals who suffer from respiratory conditions such as asthma. 6、Acrylic Material: Constructed with acrylic and medical PP, stainless steel materials, it is tasteless, safe and healthy, environmentally friendly and has a long service life.