Breathing Exercise Device (BLACK)

Breathing exercise: Helps to increase lung capacity and is a breathing trainer or breathing trainer that improves lung strength and capacity. Function: Consumption of oxygen, reducing shortness of breath, improving shortness of breath, strengthening the lungs: breathing/breathing. Adjustable: Adjust breathing resistance by manual rotation, suitable for training in various occasions. Application: Especially designed for athletes, pilots, singers, etc.: versatile usage: reliable quality, made of durable silicone. Suitable for swimming, diving, running, fitness, cycling and many other opportunities. Specity: Material: Silicon
Breathing exercise: Helps to increase lung capacity and is a breathing trainer or breathing trainer that improves lung strength and capacity.
Function: Consumption of oxygen, reducing shortness of breath, improving shortness of breath, strengthening the lungs: breathing/breathing.
Adjustable: Adjust breathing resistance by manual rotation, suitable for training in various occasions.
Application: Especially designed for athletes, pilots, singers, etc.
Versatile uses: reliable quality, made of durable silicone. Suitable for swimming, diving, running, fitness, cycling and many other opportunities. Specity: Material: Silicon