Function: 1. Suitable for tongue side, lifting and damping. Perfect for all ages, suitable for both children and adults. Used to stretch the lingual frenulum and improve bolus control. 2. Suitable for orthodontics, swallowing health awareness and others who need to do tongue training. 3. I-Shape trainer suitable for the posterior alveolar ridge of the tongue to perform alternating back and forth lateral training 4. T-shaped trainer suitable for positioning the front teeth of the tongue up and down or alternating left and right training. 5. C-Shape trainer suitable for alternating mouth and tongue training. Specification: Item Type: Tongue Tip Exercise Material: PPHardware Suitable for: orthodontics, swallowing health awareness and others who need to do language training; Characteristics: I-Shape trainer suitable for the posterior alveolar ridge of the tongue to perform alternating back and forth lateral training T-shaped trainer suitable for setting the front teeth of the tongue up and down or alternating left and right training. The C-trainer is suitable for alternating mouth and tongue training. How to use: Open your mouth and place the tip of the tongue trainer in the right position in your mouth, bite it gently, then push the ball with your tongue from one side to the other for restoring. The tip of the tongue should remain in contact with the small ball holder throughout the process. Repeat this action 10-50 times Cleaning: Rinse with warm water and wipe This product is a consumable item. In case of damage, please stop using it and replace it timely. After use, use it with an orthodontic cleaning tablet to clean Size: as pictures show Package List: 1 x I-Shape trainer 1 x T-shaped trainer 1 x C-shaped trainer