Feature: 1. Improve Breathing: Lung exerciser device works by creating resistance when you breathe, which can effectively improving your respiratory muscle strength. 2. Multifunction: Breathing lung exerciser can reduce breathing difficulties and improve exercise performance, effectively improve endurance and shortness of breath. 3. Detachable Cleansing: Breathing lung exerciser designed with removable parts, you can easily take them apart, wash and dry them, which is safe and cleanse. 4. Widely 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. 5. Acrylic 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. Specification: Item Type: Breathing Exerciser Material: Medical Acrylic, Silicone Installation Length: Approx. 15cm / 5.9in. Package List: 1 x Breathing Exerciser1 x Mouth Valve 6 x Filter Cotton 1 x Lanyard 1 x Storage Bag1 x Manual 1 x Nose Clip