A beautiful smile is a showcase human. With this product Your A smile will look again EXCEPTIONALLY!!! Make sure that your teeth do not grind and enamel does not damage during sleep. The rail in the form of a heat shrink protector is one of the quick and easy applications for this. Why the trainers? develop good habits. remove bad oral breathing habits recommended for correcting oral defects are responsible for aligning and maintaining the correct alignment of teeth adequate stiffness (have sufficient pressure and are comfortable to wear) multifunctional (can improve large tooth gap, malocclusion, and wearing at night can also relieve bruxism symptoms) convenient (to keep clean, just immerse in water for 25-30 minutes) Technical data: Material: medical TPE Color: clear Size: 6*5.5*2.5 cm Suitable for ages over 12 years old Set includes 3 pieces of A1,A2,A3 rails * A1 is soft, first stage, use 2-3 months. * A2 is moderate, the second stage, use 4-5 months. * A3 is hard, third stage, use 3-4 months. The correction process is divided into three stages: After using A1 for 1 month, you can gradually use A2. Use A2 during the day and A1 at night Once fully adjusted to A2, you can gradually use A3 together. Use A3 during the day and A2 at night. You have to wear it every day, then the visible improvement will be noticeable within 4-6 months! Instructions for use: 1. At the initial stage of wearing, the wearing time should not be too long. It can be gradually increased and gradually adjusted. 2. For example, at first wear it for 2 minutes for the first time, 5 minutes for the second time, 10 minutes for the third and half hour for the fourth time. Slowly increase the wearing time. Adjust the time according to your adaptability. 3. If you feel discomfort or pain in your teeth, remove it, rest it, and then wear it again. 4. Wear it for 12 hours during the day after adaptation. After the teeth get used to braces, the time of use can be increased. Benefits of Using Trainers: lack of elements susceptible to fractures lack of elements causing rubbing of the mucous membrane Lack of time-consuming follow-up visits recommended by dentists - trainers are described in books on orthodontics corrects poor language setting corrects habitual breathing through the mouth PLASTIC BOX FOR HYGIENIC STORAGE FOR FREE!