Features： 1、Lip Muscle Training: Cover the braces with the upper and lower lips, and repeat the upper and lower lip closing movements, and adjust the resistance of the trainer to exercise and improve the strength of the lip muscles. 2、Improve Oral Muscle Strength: It can exercise to improve the strength of the oral muscle, and has a good improvement and exercise effect on poor closure and mouth breathing caused by poor oral muscle strength. 3、Face Slimming: Training will involve the cooperation of the entire facial muscle group, so it has a certain effect on face slimming, improving facial skin relaxation, nasolabial folds, etc. 4、Good Correction: After long term use, it can activate the muscles of facial expression. Improve protruding lips and sleep with mouth open, prevent facial deformities. 5、ABS Material: A set of accessories are available, easy to install and use. Adopts high quality ABS material, safe and eco friendly, firm and sturdy, durable. Specification： Item Type: Oral Lip Muscle Training Tool Material: ABS Use: Lip muscle training tool Package List： 1 x Wrench 2 x Spring 2 x Support 1 x Main Body 2 x Braces