Train and stretch your oral muscles with these durable PP and metal tongue trainers. Suitable for all ages, the I-shape trainer targets the posterior alveolar position, the C-shape trainer trains the mouth and tongue alternately, and the T-shape trainer exercises the front teeth position. Improve your bolus control and enhance your lingual frenulum with these versatile training tools. 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