This dental orthodontic braces set includes three braces of different toughness and flexibility, designed for step-by-step 3-phase use. The set is made of silicone and is suitable for kids. It is advised to use the alignment trainer for continuous 1-2 hours by day and 8 hours by night. The dual function of tooth alignment and muscle function training will make the braces play an effective role in the interval of wearing time.