Lung Spirometer Lung Breathing Exerciser

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Designed for boosting your stamina and improve lung capacity respiratory breathing exerciser
Also help to strengthening respiratory muscles abs easily and quickly increase your breath endurance.
Help you to inhale more volume of oxygen into your lungs and to exhale more carbon dioxide out.
Adjustable resistance dial allows you to adjust resistance according to your own physical conditionSpecification:Material: Silicone
Size: 21x12x3.5cm/ 8.26x4.72x1.38 inchesPackage Includes:1 Piece Breathing Exerciser Mouthpiece(Assorted Quatity for You Choose)Exercise Mouthpiece;Breathing Exercise Mouthpiece;Lung Spirometer Lung Breathing Exerciser;Fitness Lung Expander Training Device Trainer;Running Workout Gym Breathing Exerciser;Inspiratory Expiratory Breathing Muscles Trainer
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