Strengthen Your Muscles: Improve resistance, endurance, and reduce shortness of breath by strengthening your respiratory muscles. Promote Better Health: This lung exerciser can alleviate breathing difficulties, relieve dyspnea, enhance athletic performance, accelerate recovery, and boost overall health and energy. Easy to Use: Practice breathing exercises anytime, anywhere. Most people only need to use it once or twice a day for just 1 to 5 minutes each time. Adjustable Resistance: Customize your workout by adjusting the resistance with the breathing and inhalation control. Ideal for Smokers: Significantly improves lung function and helps prevent respiratory diseases. Especially beneficial for the elderly, smokers, and individuals with respiratory conditions like asthma. Durable Materials: Constructed with acrylic and medical-grade PP, rust-free materials, ensuring it's tasteless, safe, healthy, and environmentally friendly for long-lasting use. Material: Medical Acrylic, Stainless Steel Combined Product Size: Approx. 11 x 3.7 cm / 4.3 x 1.5 in Includes: 1 x Lung Mucus Removal Device, 1 x Mouthpiece, 1 x Manual