Features: 1. Material: this adult orthodontic appliance is made of good material, which is durable.  2. Applicable for: this adult orthodontic appliance is applicable for people over 12 years old. 3. Ergonomic design: according to the human oral structure, simulate the arrangement position of normal teeth, and carry out many clinical experiments, which has a significant effect on the maintenance of corrected teeth. 4. Fine workmanship: with fine workmanship, this adult orthodontic appliance has good effect.  5. Convenient to use: with lightweight and portable size, it is easy and convenient to carry and use.  Description: With fine workmanship, this adult orthodontic appliance has good appearance. Specifications: Size: 6*2.5cm  Color: transparent Function: dental orthosis Applicable to: adults Package Included: 1* Adult orthodontic appliance Notes: 1. Please allow 0-1 inch error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from real object.