100% brand new and high quality The teeth retainer is to consolidate the effect of dental orthodontic treatment and maintain the teeth in the great aesthetic and functional position. Made of food grade modified plastic material, no harm to the teeth and oral soft tissue, safe to support poorly aligned teeth and various arch forms. Applicable to upper and lower teeth are crowded, open jaw, jaw deep overbite, maxillary protrusion, the usual broad lips, etc. An effective new orthodontic equipment. Practical and useful to improve facial shape guide and promote the normal development of jaw. It can also prevent odontoprisis in night sleeping. Instructions: 1. Before the first use may have a slight smell, please wash the corrector in warm water. 2. If necessary, using a toothbrush and toothpaste for brushing, just began to use will have a foreign body sensation, nausea, slobber more, tooth pain and other symptoms, to adapt slowly will ease. 3. The use of once time may not have obvious effect, need users perverse. Specification: Material: Modified Plastic Dimensions: 6x4.5x2.2cm(2.36x1.77x0.87in)(approx) Optional Color: Clear White, Clear Purple, Clear Blue Quantity: 1 pc Note: Transition: 1cm=10mm=0.39inch No retail package. Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1pcs x Teeth Retainer(other accessories demo in the picture is not included.)