1. Tongue training tool It can be used to exercise flexibility of the tongue and is suitable for people with language barriers such as slow speech, stiff tongue and incomplete tilt. 2. Specially train muscle strength, flexibility and stability of the language. Improve tongue muscle strength and tongue coordination. 3. Oral Muscle Trainer It is a professional tool for the trainer, which allows coach to independently control flexibility; and stability of the tongue. 4. There are two ways to use the alternate up and down feed, left and right right, you can choose according to your own situation. 5. Mainly solve the language development problems of children and the elderly, such as unclear tendency of children and unclear speech of the elderly. Descriptions: How to use: You can choose according to your own situation 1. Top-Down Training: Open your mouth wide, place the tip of the tongue trainer at your mouth. the vertical in the middle of your mouth, use the tip of your tongue to push the ball from bottom to top, then put it back from top to bottom. Repeat the workout 50-100 times; 2. Alternate training to left and right right: Open your mouth wide, place the tip of your tongue horizontally in the middle of your mouth, use the tip of your tongue to push the ball from left or right to the other side, and repeat the workout 50-100 times. Size: 15x5cm / 6x2 inch Material: Plastic Package Included: 1*Headset tongue trainer (random color)