Master your endurance 🏃♂️💨
Having trouble keeping up on the court? Boost your performance with the Lung Flexer. Boost your endurance and dominate every game with ease!
Boost your endurance in 1 week🫁💪
The adjustable airflow nozzle adjusts the amount of air you breathe during your workout, allowing your lungs to become more efficient. With just one hour of use per day, you are sure to experience an increase in endurance
Lung Flexer Smart Breathing Trainer with Biofeedback for Athletes
$19.90
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