Feature 1Tongue Muscle Training: The training is mainly carried out through the feedback between the tongue and the trainer, which can quickly improve the flexibility and muscle strength of the tongue, thereby changing the clarity of speech. 2Oral Movement Construction: Tongue trainer facilitates correct construction of oral movement patterns required for pronunciation and provides tactile and proprioceptive feedback for sensorimotor stimulation. 3Multi Purpose: Oral muscle exerciser can be used to exercise the muscles of the cheeks, soft palate and pharynx, and to train the lip closing movement. 4Wide Range Of Applications: Oral muscle trainer set is mainly suitable for people with oral movement disorders, articulation disorders (motor, organic, functional), language disorders, resonance disorders, etc. 5Plastic Material: Tongue muscle recovery tool is made of food grade plastic material, safe and eco friendly, firm and durable. Ergonomic design, easy to hold and use.Item Type: Tongue Muscle TrainerMaterial: Food Grade PlasticLength: Approx. 15.8cm / 6.2inFunction: Promote lip closure movement, tongue flexibility, tongue muscle strength, change speech articulationApplicable Age: 1-7 years old .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List4 x Tongue Training ToolNote1. Individual use alone to prevent cross infection.2. Can not be placed in the microwave oven to clean.3. Soak and clean with special cleaning solution before and after use, do not clean with boiling water, clean with warm water.4. Please allow slight error due to manual measurement. Thanks for your understanding.