Good shape stability. After being immersed in boiling water for a long time, the tray will not be deformed or contracted so much that it cannot be used.<br> 2. High transparency. The molded dental tray can maintain high transparency, which is especially suitable for use with the cold light whitening device.<br> 3. Good thermoplasticity. Compared with other similar products, the thermoplastic has obvious advantages, especially suitable for home use, and the gum line is very clear<br> 4. It can be formed repeatedly. Due to the inaccurate control of the water temperature and soaking time, the dental tray molding effect is often not good.<br> 5. This product can be remolded in hot water at 80-90 even if it is poorly formed, which is not available in other products.<br> 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. Sold by-Minnanxin