Feature 1Improve Breathing: Lung exerciser device works by creating resistance when you breathe, which can effectively improving your respiratory muscle strength. 2Multifunction: Breathing lung exerciser can reduce breathing difficulties and improve exercise performance, effectively improve endurance and shortness of breath. 3Detachable Cleansing: Breathing lung exerciser designed with removable parts, you can easily take them apart, wash and dry them, which is safe and cleanse. 4Widely Use: Breathing lung exerciser can effectively improve lung function and prevent respiratory diseases, suitable for the elderly, smokers, people with asthma and other respiratory diseases. 5Acrylic Silicone: Handheld breathing exerciser is made of acrylic and silicone, safe and sturdy, suitable for daily use, which is small in size for easy to carry.Item Type: Breathing ExerciserMaterial: Medical Acrylic, SiliconeInstallation Length: Approx. 15cm / 5.9in .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Breathing Exerciser1 x Mouth Valve6 x Filter Cotton1 x Lanyard1 x Storage Bag1 x Manual1 x Nose Clip