Feature: 1. Function: Increases the flexibility of the tongue and changes the clarity of speech. It can be used to exercise the muscles of the cheek, soft palate and pharynx. 2. 4pcs Set: Each tool is divided into two parts of handle and exerciser. It can promote the correct construction of oral motion patterns required for articulation and provide tactile and proprioceptive feedback to sensorimotor stimuli. 3. Applications: Suitable for oral movement disorders, articulation disorders (motor, organic, functional) language disorders, resonance disorders, swallowing problems, etc. 4. Suitable People: Suitable for people above 8 years old, promote lip closure movement, tongue flexibility, tongue strength, change speech clarity. 5. Material: Made of food grade plastic material, before and after use, use special cleaning liquid to soak and warm water to clean, do not use boiling water. Specification: Item Type: Tongue Muscle Trainer Material: Food Grade Plastic Length: Approx. 16cm 6.3in Functions: Promote lip closure movement, tongue flexibility, tongue strength, change speech clarity Suitable Age: Above 8 years old Package List: 4 x Tongue Muscle Trainer Note: 1. Dedicated to one person use, do not mix use to prevent cross infection. 2. Can not be placed in the microwave for clean. 3. Before and after use, use special cleaning liquid to soak and warm water to clean, do not use boiling water. INDICATIONS That's it!WIDE RANGE OF APPLICATIONS: Suitable for people above 8 years old, promote lip closure movement, tongue flexibility, tongue strength, change speech clarity. Suitable for oral movement disorders, articulation disorders (motor, organic, functional) language disorders, resonance disorders, swallowing problems, etc. Light weight and compact size is easy to take outdoor and travel. MULTI 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. The tongue trainer can promote the correct construction of oral movement patterns required for pronunciation. TONGUE 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, and enable the trainer to independently master the flexibility and stability of the tongue. ORAL MOVEMENT CONSTRUCTION: Each tool is divided into two parts of handle and exerciser. It can promote the correct construction of oral motion patterns required for articulation and provide tactile and proprioceptive feedback to sensorimotor stimuli. TONGUE EXERCISER 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. Before and after use, use special cleaning liquid to soak and warm water to clean, do not use boiling water.