Lung Exerciser & Mucus Remover - Naturally Clear Mucus With The Breathing Exerciser Device Continued use can help loosen phlegm and promote coughing to better remove mucus. Effective For Many Respiratory Conditions - This lung cleaner is an invaluable tool for anyone suffering from respiratory issues, used for Asthma, Atelectasis, Bronchitis, Cystic Fibrosis, etc. Universal For Most Users - Our breathing aids come with three Stainless Steel Ball Bearings so that you can adjust to Minimal or Maximum Positive Pressure depending on your lung capacity, age, and current health. Quick Easy To Use - Our mucus clearingdevice is simple in design and requires no refills no batteries, easy to use and clean. Use it for just 5 - 10 minutes once or twice a day. Designed To Help Train Lungs - This lung exerciser device can facilitate gas exchange, improve lung strength,reduce breathlessness, and improve quality of life. color: blue Dimensions: as picture shown Delivery quantity: 1 piece Warm prompt: 1. As different measuring methods, it will occur 1-3 cm deviation about the items, please ensure that it is okay for you before ordering. 2. Because of different monitors and lamplight, the picture may not reflect the actual color of the item, really thank you for your kind understanding 3. Only the above package contents, excluding other products. Products from JINYI's store