Breathing Exercise Device for Lungs with 5 Resistance Levels & 2 Detachable Mouthpieces | Lung Trainer for Natural Respiratory Therapy | Lung Exerciser Device & Breathing Exercise Device Peak horse [Adjustable Wrist Strap]: The sliding

[Adjustable Wrist Strap]: The sliding clasp on the hand exercisers for easy to adjust to your own wrist size

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waterproof TPU fabric and silicone non-slip netting

SOLD AS A PAIR: No more need to switch straps for cable weight machine during workouts

The handle of the nail clipper is non-slip design

Breathing Exercise Device for Lungs with 5 Resistance Levels & 2 Detachable Mouthpieces | Lung Trainer for Natural Respiratory Therapy | Lung Exerciser Device & Breathing Exercise Device Peak horse [Adjustable Wrist Strap]: The slidingBreathing Exercise Device for Lungs with 5 Resistance Levels & 2 Detachable Mouthpieces Lung Trainer for Natural Respiratory Therapy Lung Exerciser Device & Breathing Exercise Device Peak Product Features Natural Respiratory Therapy: Enhance lung capacity and strengthen respiratory muscles for improved breathing. 2 Detachable Mouthpieces: The sealing type is for daily lung training, the biting type is for training when you are doing exercising. 36