Resistance Workout Training Mask | Adjustable Cardio Fitness Cycling Running Triathlon Lifting Endurance Sports Exercise (Black, Medium)

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Description

Add Respiratory Resistance Training Mask (RRTM) to your workouts. Using the Resistance Training Mask consistently in your exercise routine will improve respiratory power and breathing mechanics (how you breathe) which equates to enhanced air turnover during each full breathing cycle (inhale & exhale).