Enttgo Portable Respiratory Trainer Exercise Device. Respiratory Muscle Training Improve Breathing Capacity Easy to Clean Adjustable Resistance, Adjustable to Different Fitness Needs Black Lip Booster model number: ‎20211102

model number: ‎20211102

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Enttgo Portable Respiratory Trainer Exercise Device. Respiratory Muscle Training Improve Breathing Capacity Easy to Clean Adjustable Resistance, Adjustable to Different Fitness Needs Black Lip Booster model number: ‎20211102INCREASE MUSCLE ENDURANCE : Use muscle trainer to Boost stamina in respiratory muscles and improve breathing ability. Also dilate diaphragm. Strengthen your respiratory and abdominal muscles with professional breathing training to ultimately improve your athletic performance. EXCELLENT EQUIPMENT : Portable and light,soft silicone,easy to clean and adjustable resistance Settings which can provide a personalized experience OPERATION INSTRUCTION: Take