Features: Elevates your respiratory fitness with our portable Breathing Trainer, designed to enhances lung capacity and improve breathing efficiency for a healthier lifestyle. This lung trainer offers adjustable resistance levels, catering to various fitness needs, and is engineered with ergonomic precisions for comfort and effectiveness. For office workers, the elderly, smokers, athletes, or anyone looking to boosts their pulmonary health, our breathing trainer serves as a tool for breathwork practice. Use it at home, in office, or at the gym; this lightweight and easy to clean device ensures you can maintain your respiratory training routine wherever you go. Experience the benefits of focused breath control and witness reduced breathlessness during physical activities with our user friendly Breathing Lung Trainer. Specifications: Material: Silicone Size: About. 53x84mm/2.08x3.3in Pattern: A/B Package Includes: 1pc Breathing Trainer note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.