1. STAY HEALTHY: The more breathing exercises you do properly, the more efficient your lungs will be at delivering oxygen to your body. This can help you better fight aging and disease. 2. KEEP YOUR LUNGS HEALTHY: Regular deep breathing exercises not only strengthen your respiratory system, but also prevent lung disease. Easy to use, simple and practical. 3. STRESS RELIEF: When you take a deep breath, it also clears your mind and frees you from the stress and anxiety that comes with daily work and activities. You can easily and positively go through the day. 4. PORTABLE DESIGN: Light weight and in small size, easy to store and carry, can be easily put into your bag, perfect for homes, hospitals and professional institutions. 5. PLASTIC MATERIAL: Deep breathing exerciser is made of plastic material, safe and eco friendly, firm and sturdy, easy to clean, wear resistant and durable for use. Spec: Item Type: Deep Breathing Exerciser Material: Plastic Product Size: Main Body: Approx. 17.7 x 11.7cm / 7 x 4.6in Capacity: 4000ml PackageList: 1 x Deep Breathing Exerciser 1 x Corrugated Tube 1 x Manual Notice: Please allow slight error due to manual measurement. Thanks for your understanding.PORTABLE DESIGN: Light weight and in small size, easy to store and carry, can be easily put into your bag, perfect for homes, hospitals and professional institutions. STRESS RELIEF: When you take a deep breath, it also clears your mind and frees you from the stress and anxiety that comes with daily work and activities. You can easily and positively go through the day. KEEP YOUR LUNGS HEALTHY: Regular deep breathing exercises not only strengthen your respiratory system, but also prevent lung disease. Easy to use, simple and practical. STAY HEALTHY: The more breathing exercises you do properly, the more efficient your lungs will be at delivering oxygen to your body. This can help you better fight aging and disease. PLASTIC MATERIAL: Deep breathing exerciser is made of plastic material, safe and eco friendly, firm and sturdy, easy to clean, wear resistant and durable for use.