Features: 1. These lip exercise sticks are made of food-grade plastic, which is odorless, non-toxic and pollution-free; durable, not easy to wear, safe and secure. 2. Small and lightweight, you can carry it with you wherever you go. You can perform simple exercises anytime and anywhere. 3. Mouth muscle training kit can quickly improve the flexibility and muscle strength of the tongue, thus changing the clarity of speech and feeding function. 4. Exercise the masseter muscles to effectively improve stuttering and chewing abilities，promote symmetrical mandibular strength, mandibular stability and grading control force for different jaw bones. 5. Texture design on the tongue mouth muscle training tool is very clear, finely polished, no burrs, will not scratch the user's mouth. Specification: brand quality Item Name:Oral Muscle Training Stick Material:Edible Plastic Color:As the picture show Size:As the picture show(1inch = 2.54cm) Package includes: 6pcs/set Oral Muscle Training Stick Note: 1.Due to the different monitor and light effect, the actual color of the item might be slightly different from the color which is showed on the pictures. 2.Please forgive 1 cm/0.39"-3 cm/1.18" measuring deviation due to manual measurement.