1. There are multiple test reports, the material is reliable and assured, and it can play the role of correcting teeth 2. Divided into three stages to wear, can make the teeth slowly adapt to the process of correction. 3. The size of the braces is made according to the standard dental model, which is suitable for most people to wear. 4. In the process of wearing braces and performing orthodontics, it can also prevent sleep and snoring. 5. Convenient to carry and can be used at any time. 6. Soft and elastic material, adapt to different groups of people Material: TPE, blister packaging/color box. The first stage of braces: hardness: soft, use period: about 1 month, function: used to adapt to orthotics and primary correction. The second stage braces: hardness: hard, use cycle: about 2 to 3 months, function: further adapt to correction. The third stage braces: hardness: hard, use period: about 3 to 6 months, function: increase the correction strength, for later correction. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.