NIVJA Deep Breathing Lung Exerciser, One ball Incentive Spirometer, Breathing Trainer for Strong Lungs, Inspiratory Expiratory Muscle Trainer, Hygenic Seal

NIVJA Deep Breathing Lung Exerciser, One ball Incentive Spirometer, Breathing Trainer for Strong Lungs, Inspiratory Expiratory Muscle Trainer, Hygenic Seal

Easy Peak Flow Meter for Adult to Monitor Lung Function | Expiratory Flow Meter | Color Coded Indicator | Standard Range for Adult | Include Instructions and Blank Charts – Color Coded Indicators

Respi-Ex Deep Breathing Lung Exerciser, 3 Ball Incentive Spirometer, Washable and Hygienic Breath Measurement System, Package with Hygienic Seal