Description: 【Breathing Exercise】: The breathing exercise device can help exercise lung capacity and breath control, satisfying different deep breathing training needs 【Enhance Endurance】: This breathing dumbbell is great for exhalation and inhalation training, boosting endurance during high intensity deep breathing workout 【Easy to Use】: The lung trainer is suitable for most people, including adults and kids. Whether you are sitting, lying or standing, you can easily do breathing exercises 【Adjustable Resistance】: The breathing exerciser trainer features 5 breathing weights, the resistance can be easily adjusted according to your training needs, meeting different people 【Portable Size】: Compact and lightweight breathing exerciser, easy to store and carry, suitable for home, office and travel, without being restricted by the places Specification: Material: PP silicone Size Chart: Main body 5.6cmx4.5cmx16cm/2.20inchx1.77inchx6.30inch Package Includes: 1 Breathing Dumbbell 5 Breathing Weights 1 Hose 1 Mouthpiece 1 Storage Bag 1 Manual Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.