Portable Lung Capacity Abdominal Breathing Trainer with Adjustable Resistance Fitness Trainer Breathing Exercise Device Lung Exerciser Device Expands restores Lung Capacity Inspiratory Muscle Trainer

【Improve Your Endurance】: Breathing Exercise for Lungs is helpful to improve your breath, helps you get better endurance, and makes you feel better day by day., Functional and Effective】: Lung Exerciser Device strengthens your lung capacity and helps you adjust the abdominal muscles, therefore allowing you to exercise core muscles., 【Modifiable Resistances】: Provides you with different resistances levels, Deep Breathing Lung Exerciser features adjustable resistances for you to easily change accordingly., Effects: Enhances exercise endurance, increases lung capacity, improves cardiovascular function, reduces respiratory difficulties, relieves stress, improves sleep quality., oduct Dimensions: 5*10CM, Material: Silicone; ABS, Weight: 68.8 grams.