Feature(may vary by option.)

●【Food Grade Material】Material: ABS plastic and silicone. Non-toxic, safe and antibacterial Wash with warm water before use. Wash saliva and air dry before storage
●Adjustable Pressure: A device that strengthens lung capacity and allows you to adjust the pressure so you can train with the step steps
●Convenient: Compact and lightweight body with excellent portability and functionality. Healthy breathing can lead to a lively life. It is used by many genres such as walking, people lack of exercise, athletes such as cycling, swimming, mountain climbing, long distance runs, and singer who want to produce treble and musicians
●Wide range of uses and easy to use: Swimming, diving, etc. Suitable for various occasions, such as surfing, running, fitness, travel, etc. Our products are durable and easy to use. It fits all mouth shapes and is completely sealed, convenient to use
●Service: If you have any question about the product, please feel free to contact us, we will reply you within 24 hours

[Black]

Description