Feature: 1. Suitable for tongue side, lifting and suppression. Perfect for all ages, appropriate for both children and adults. Used to stretch the lingual frenulum and improve bolus control. 2. Suitable for orthodontics, swallowing health awareness and other people need to carry out tongue training. 3. I‑Shape trainer suitable for the posterior alveolar position of the tongue to perform lateral back and forth alternate training 4. T‑Shape trainer suitable for the front teeth position of the tongue up and down or left and right alternating training. 5. C‑Shape trainer suitable for alternately training the mouth and tongue. Specification: Condition: 100% Brand New Item Type: Tongue Tip Exercise Material: PP + Hardware Suitable for: orthodontics, swallowing health awareness and other people need to carry out tongue training Features: I‑Shape trainer suitable for the posterior alveolar position of the tongue to perform lateral back and forth alternate training T‑Shape trainer suitable for the front teeth position of the tongue up and down or left and right alternating training. C‑Type trainer suitable for alternately training the mouth and tongue. Directions for use: Open your mouth and put the tip of your tongue trainer into the corresponding position in your mouth, gently bite it, and then push the ball with your tongue from one side to the other side for restoration. The tip of your tongue should keep in contact with the small ball holder throughout the whole process. Repeat this action 10-50 times Cleaning: rinse with warm water and wipe Notes: This product is consumable. In case of damage, please stop using it and replace it in time. After using it, use it with orthodontic cleaning tablet for cleaning Size: As Pictures Show. Package List: 1 x I‑Shape Trainer 1 x T‑Shape Trainer 1 x C‑Shape Trainer