Breathing Exerciser Lung Trainer With Adjustable Silicone Mouthpiece

<p>This handheld breathing exerciser is a lung trainer for resistance breathing workouts. The mouthpiece is made of soft silicone with a textured, anti-slip bite surface, and the threaded ABS handle turns to change how much resistance you breathe against. Turn the dial toward "+" for more resistance and toward "-" for less.</p><ul><li>Adjustable resistance dial marked "+" and "-"</li><li>Silicone mouthpiece with a textured bite grip</li><li>Threaded ABS handle with a non-slip grip</li><li>Two-piece design that separates for rinsing and cleaning under running water</li><li>Size: mouthpiece 6 cm / 2.36 in wide by 10 cm / 3.94 in tall; weight 70 g</li></ul><p>Use it for running, swimming, cycling, or boxing training. The package includes one muscle trainer, one instruction manual, and one packaging box. Each unit is one breathing exerciser.</p>

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