This set of Tongue Tip Training Tools includes 3 trainers made of durable PP & metal materials. The I, C, and T shape trainers are suitable for various tongue training exercises, including lifting, suppression, and bolus control. Perfect for all ages, these tools help stretch the lingual frenulum and improve oral muscle function. Suitable for both children and adults, the trainers can be used for long-term use and are perfect for at-home use. Features 1. Function: 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. Material: Oral muscle training uses PP and hardware materials, which are durable and can be used for a long time. 3. I-Shape Trainer: Suitable for the posterior alveolar position of the tongue to perform lateral back and forth alternate training 4. C-Shape Trainer: Suitable for alternately training the mouth and tongue. 5. T-Shape Trainer: Suitable for the front teeth position of the tongue up and down or left and right alternating training. Specification Material: PP, Metals Color: Blue Package Size: 15 7 1 cm Weight: 27 g Package Include: 3 Tongue Tip Trainer