describe: 1. Drug-free independent therapy mucus remover - Apply OPEP, a globally trusted therapy. Continued use can help break up phlegm and encourage coughing for better mucus removal. Effective for many respiratory diseases 2. This lung cleaner is a valuable tool for anyone suffering from respiratory conditions and is used to treat asthma, atelectasis, bronchitis, cystic fibrosis and more. Universal for most users 3. Our breathing aid comes with three stainless steel ball bearings so that you can adjust to minimum or maximum positive pressure based on your lung capacity, age and current health. QUICK AND EASY TO USE - Our slime removal device is designed to be simple, requires no refills, requires no batteries, and is easy to use and clean. Use once or twice daily for 5 - 10 minutes. DESIGNED TO HELP TRAIN THE LUNGS - This lung exerciser device promotes gas exchange, increases lung strength, reduces breathlessness, and improves quality of life. Package contents: 1 piece of training device