Material: PVC+PC+PP+silicone
 Why use a breathing tube?
 (1) Correct the strokes and keep your head stable when swimming, complete the swimming decomposition action under the professional guidance of the coach, and be more able to focus on the improvement of your own technique and improve the level of competition.
 (2) Exercising vital capacity Due to the narrow diameter of the breathing tube, swimmers are forced to rely on the chest cavity to inhale vigorously, thereby exercising vital capacity and further improving the body's anaerobic metabolic capacity
 Note: This product is not a life-saving product for swimming. Children need to be accompanied by an adult or coach to use this product.