Drug-Free Standalone Therapy Mucus Remover - Apply OPEP, the world's trusted remedy. Continued use can help reduce phlegm and promote a cough for better mucus removal. EFFECTIVE FOR MANY RESPIRATORY DISEASES - This lung cleaner is an invaluable tool foranyone with a respiratory disease, treating asthma, atelectasis, bronchitis, cystic fibrosis and more. Suitable for most users - Our breathing aids come with three stainless steel ball bearings so you can adjust to minimum or maximum positive pressuredepending on your lung capacity, age and current health. FAST AND EASY TO USE - Our slime removal device is designed to be simple, no refills, no batteries, and is easy to use and clean. Use once or twice daily for 5 - 10 minutes. Designed to HelpTrain Your Lungs - This lung exercise device promotes gas exchange, improves lung strength, reduces breathlessness and improves quality of life. Shipment Quantity: 1 Piece Package Contents: Only the above package contents, excluding other products. Size: 10*4*5cm, Diameter: 2.8cm (Reminder: The size is measured by hand, please allow 1-2 cm measurement error) color: blue (Due to different monitors and lighting effects, the actual color of the product may be slightly different from the picture color.)